BuyMyBricks
Last updated: 15 May 2026
Is the LEGO The DeLorean Time Machine 21103 Worth Buying Sealed in 2026?
The LEGO The DeLorean Time Machine 21103 is worth buying sealed in 2026 if you are a fan of vintage builds and have the space for it. BMB stocks one at £103.99. BMB has one sealed unit of this set available, priced at £103.99. It is a rare find as BMB no longer has any in stock.
Are you wondering whether to buy this 2013 LEGO Ideas and CUUSOO set? This post is for UK adult collectors who are curious about adding vintage builds to their collection.
- The set has 401 pieces
- Designed by Steen Sig Andersen
- Box size is 26 x 18.8 x 6 cm
- Currently priced at £103.99 sealed
- No sealed market value expected price available
- Email alert when new sealed stock arrives
- Retired UK LEGO only, nothing else
- Unsubscribe any time
What is the LEGO The DeLorean Time Machine 21103?
The DeLorean Time Machine 21103 is part of the LEGO Ideas and CUUSOO themes, released in 2013. It features iconic elements like the DeLorean car with its distinctive shape and door design. The set comes with 401 pieces, making it a moderate build for enthusiasts. It is designed by Steen Sig Andersen, known for his creative and detailed builds.
Build Experience
Building the DeLorean Time Machine is a straightforward process. The instructions are clear and easy to follow. The set includes all necessary pieces for constructing the car, including the iconic doors and lighting elements. The build time typically ranges from 1 hour 30 minutes to 2 hours, depending on your LEGO experience. This set is suitable for LEGO fans aged 10 and above.
Authentication Mechanics
Verifying the authenticity of a sealed set like this is crucial. BMB ensures all their sets are genuine and come with a certificate of authenticity. The box size (26 x 18.8 x 6 cm) is standard for LEGO sets of this era, making it easy to identify. Check the EAN code (5702015064835) on the box to confirm its legitimacy.
Display and Collectability
The DeLorean Time Machine makes a striking display piece. Its size, at 26 x 18.8 x 6 cm, is perfect for collectors who want to showcase vintage builds. The set is not a standout, but it adds a unique touch to any collection. Authenticity is key here; sealed sets maintain their original condition and are more desirable than used ones.
UK Market Context
In the UK market, this set has been retired for some time, making it a sought-after item among collectors. The current price at BMB (£103.99) reflects its vintage status. As with many retired sets, the value of sealed units is harder to predict due to lack of historical data. However, the set’s rarity and build quality make it a worthwhile addition for enthusiasts.
How BuyMyBricks verifies sealed retired LEGO
Every sealed retired LEGO copy on the BuyMyBricks shelf has been through a five-point inspection at our Yorkshire warehouse before it gets listed for sale. The same inspection runs on every retired set we hold, regardless of theme or price band, because the failure modes for retired LEGO are mostly theme-agnostic.
What we check on every box, in order: (1) Original factory seal stickers on every flap, intact, with no peel-and-restick edges. (2) Tape integrity across the top and bottom seams, with no replacement adhesive. (3) Set-number match against the box artwork and the LEGO part number printed on the back. (4) Box-condition pass for crushing, tears, water damage, or storage warping that would compromise a display copy. (5) Photographic record of every face of the box, kept on file against the listing.
If a box fails any of those five checks on arrival, it does not get listed. If a sealed set reaches you in a state that does not match our description, we refund in full. That is the difference between a specialist retailer and a marketplace.
Storing and displaying retired LEGO
A sealed retired LEGO box is a long-term object. Three storage rules keep a sealed copy in the same state it left our warehouse, whether you display it sealed, build it years later, or hold it as part of a curated collection.
Keep boxes flat or upright, never stacked under heavy weight. Stack pressure crushes corners over time. A wire shelf with the box laid flat or stood on its long edge is the safest position.
Stable temperature and low humidity. LEGO boxes use coated cardstock that can ripple in a damp loft or warp near a south-facing window. A bookshelf in a heated room at normal indoor humidity is fine. A garage, an unheated outbuilding, or direct sunlight is not.
Plastic UV-shielding sleeves are optional but help. If you display sealed boxes long-term in a room with significant daylight, a clear acid-free polypropylene sleeve protects the artwork from yellowing.
The UK retired-LEGO market in 2026
The UK market for retired sealed LEGO has matured rapidly since 2022. Specialist UK retailers like BuyMyBricks now compete with marketplace listings on eBay and Facebook Marketplace for the same scarce sealed stock. The result is a clear two-tier market: verified specialist supply at one tier, and unverified marketplace listings at another. Prices on the specialist tier carry a small uplift for the verification work, the storage, and the 30-day returns. The marketplace tier is cheaper on paper but carries the risk of reboxed, resealed, or damaged sets, with no recourse if the box arrives compromised.
For a UK collector deciding where to buy a retired sealed copy, the calculation is straightforward. If the set is high-value or the box matters for display or long-term hold, the specialist tier removes the lottery. If the set is a low-value brick-source build, the marketplace tier saves a small amount. The split tends to favour specialist purchase for any sealed set worth £100 or more, which is where almost all the retired sealed market sits.
Verified set facts: the LEGO 21103 reference card
The LEGO The DeLorean Time Machine 21103 sits in the LEGO LEGO Ideas and CUUSOO line. The set was released in 2013 and retired within recent years. The launch price was £34.99.
The set contains 401 pieces, designed by Steen Sig Andersen, with an official LEGO age range of 10+. The built model measures in the dimensions noted on the official LEGO product page, with the box itself sized 26 x 18.8 x 6 cm. The European barcode (EAN) for verification purposes is 5702015064835.
The current UK market value for a sealed copy of this set sits in line with the current BuyMyBricks shelf price of £103.99. That price reflects the verified-sealed condition, the UK warehouse storage, tracked delivery and the 30-day returns window. Marketplace listings for the same set without those guarantees usually sit either slightly below the BMB price (where the box is compromised in some way) or above (where the seller is testing what the market will pay).
What sealed authentication actually looks like
Authentication of a sealed retired LEGO copy is a physical-world job, not a digital one. No certificate or QR code on the box proves the set inside the box is the set on the box. The proof is the seal stickers, the factory tape, the printed set number on every box face, the cardstock weight under your fingers, and the way a genuine LEGO box smells when you crack it open. Those signals are stable across LEGO sets and across LEGO years. Once you have inspected a few sealed LEGO retired boxes you can spot a compromised box in about ten seconds.
For UK buyers, the most common ways a sealed retired LEGO box ends up compromised are: the box was opened to swap out an unwanted minifigure for a worn one and resealed, the box arrived to a warehouse in transit damage and was repackaged into a new outer carton that hides the impact damage, or the box is a counterfeit shipped from outside the UK and resealed to look factory. None of those modes get past a five-point inspection. All of them get past the average marketplace listing if the photos are angled carefully.
BuyMyBricks publishes photographic provenance on every sealed retired listing. The photos on a BMB product page are the photos of the specific box that will be sent. We do not use stock photography for sealed retired sets, because stock photography hides exactly the things that matter for verification. If you compare the photos on a BMB listing to the photos on a typical marketplace listing of the same set, the difference in what the seller is willing to show you is itself the verification signal.
Why retired LEGO sets matter to UK collectors in 2026
The retired sealed LEGO market in the UK is shaped by three forces. The first is the rate at which LEGO retires sets, which has accelerated since 2020 as the LEGO portfolio has grown and shelf-space-per-set has shrunk. A set that ran for three years on shelf is now common. A set that ran for five years is increasingly the exception. The second force is the collector population, which has expanded as the original 1980s and 1990s LEGO builders have aged into the adult-LEGO audience LEGO now openly targets with the 18-plus product lines. The third is the verification gap: marketplaces that handle sealed retired LEGO do not check the boxes, which has created room for specialists who do.
For a set like the one this guide covers, those three forces compound. A retired set with adult-collector appeal, a finite supply, and a clear authentication risk is exactly the kind of set where a UK specialist retailer earns its keep. The BuyMyBricks shelf price reflects that. It is not the cheapest listing you will find, because we have absorbed the verification cost and the inventory cost and the returns cost. It is the cleanest route through the market for a buyer who wants the set, sealed, with the box you saw in the photos.
If you are weighing this set against alternative routes, the question to ask is not whether the marketplace price is cheaper today. The question is what condition the box arrives in, whether the box matches the photos in the listing, and what your recourse is if it does not. Once you cost those three things into the marketplace tier, the gap between the two tiers usually disappears.
Factory sealed, verified before despatch from our Yorkshire warehouse. £103.99 with tracked UK delivery and 30-day returns.
Email me when restocked →The Verdict
What other builders make of the LEGO 21103
Do not just take our word for it
The Brickset community thread for the LEGO 21103 runs across multiple years. Reviewers consistently praise the build technique work and the printed-vs-stickered ratio that LEGO chose for this set, while criticisms cluster around minifigure availability, sub-theme proportions, and the parts that get lost or damaged in used copies.
For specific reviews, search Brickset by set number 21103. Reddit’s r/lego runs frequent retired-set threads where this set appears in comparison posts and “should I buy” threads.
Source consensus: Brickset 21103 thread and Reddit r/lego.
More retired LEGO LEGO Ideas and CUUSOO sets at BuyMyBricks
Browse the full retired LEGO Ideas and CUUSOO collection at BuyMyBricks.
Frequently Asked Questions
What is the significance of the set being sealed?
Sealed sets maintain their original condition, preserving the value and authenticity that collectors seek. Used copies can suffer from wear and tear, reducing their overall appeal.
How does the BMB price compare to other retailers?
BMB prices are competitive. The current price of £103.99 is in line with the market for vintage LEGO sets, ensuring a fair deal for collectors.
What makes this set notable in 2026?
This set is notable for its iconic design and moderate build complexity. It is part of the LEGO Ideas and CUUSOO themes, making it a unique addition to any vintage collection.
Can I find this set in other markets?
The availability of The DeLorean Time Machine 21103 can vary by market. BMB focuses on UK inventory, so check with them for the best deal.
How do I know if a set is genuine?
BMB ensures all sets are genuine and come with a certificate of authenticity. Check the EAN code (5702015064835) and verify the box size to confirm its legitimacy.
How does BuyMyBricks decide what retired LEGO to stock?
We source retired sealed LEGO from three channels: direct buy-back from UK collectors, dealer-network purchases at trade shows and conventions, and overseas containers when the maths works. Every box that comes through the door passes the same five-point inspection before it gets listed for sale, regardless of source. We do not list a sealed box if any of the five checks fail. The boxes that do not pass go back into trade circulation through other channels.
What happens if a retired LEGO set arrives damaged?
UK consumer law gives you a 30-day return window on any sealed LEGO set purchased from BuyMyBricks for any reason, including the box arriving damaged in transit. We hold a photographic record of every face of every box before despatch, so the inspection condition is on file. If a tracked-delivery despatch arrives damaged, we refund in full and recover the parcel cost from the carrier. The risk of carrier damage is ours, not yours, on every sealed sale.
Does BuyMyBricks ship sealed retired LEGO outside the UK?
We are a UK-focused specialist and most of our despatches go to UK postcodes via tracked Royal Mail or DPD. For some retired sealed sets we ship to the Republic of Ireland and selected EU destinations, depending on the parcel size and current carrier rates. For the heaviest sealed retired sets, the international shipping rate often does not work out cheaper than buying domestically wherever the buyer is based. The UK retired-LEGO specialist market is the market we serve best.
- Email alert when new sealed stock arrives
- Retired UK LEGO only, nothing else
- Unsubscribe any time
Follow us on Instagram, TikTok, YouTube, and Facebook at @buymybricks.
Get retired sets first
Sealed retired sets list to email before they hit the site. One email when new stock lands. UK only.
Want first dibs on retired sets?
We send one email when a new sealed shipment lands. No discounts, no daily blasts. UK only.
First dibs on retired sets
We email when new sealed stock lands. One per drop, no daily blasts. UK only.