Can anyone identify these bricks, which I suspect are Lego/Duplo clones. They may be more than 30 years old.

I bought them on ebay as Betta Bilda from Lego/Duplo dealer. Some BB was included, but these are unknown to me, with an extensive BB collection.

Mystery bricks 1 Mystery bricks 4

The underside of the bricks is hollow and with apparently random numbers - they aren't part numbers because they are different for the same part and sometimes the same for different parts. Window frames have no top studs. Mystery bricks 7 Mystery bricks 8 Mystery bricks 13

I took a good look through many posts with similar questions, but found nothing that matched. Many Google reverse images searches kept pointing at real Lego/Duplo, before I noticed this place.

Usually I can identify unknowns like this, but these are a real challenge.

  • 3
    Don't know what brand they are, but I'm pretty sure they were around in the 1980s, since I have some from when I was little. Might help with dating them a bit... – Matthew Dec 5 '17 at 6:36
  • Matthew - thanks for that, any help is appreciated. They are hard to date by condition, but could be slightly newer than the 60s Betta Bilda they came with. Since my original post I found some similar looking parts under the question "Lego variant, or is it?" with answers suggesting 60s or 70s. There was also one suggestion that they might actually be non-ABS Lego from the 60s. – Paul F Dec 7 '17 at 19:01
  • 1
    Those window parts are remarkably similar to some I had back in the 70s. No studs on top, and the hinge points look identical. They were authentic Lego. – Rory Alsop Dec 20 '17 at 8:47
  • I keep happening upon this, and the 2 or 3 others that seem very similar or the same. The problem is that here it is suggested that they're Duplo sized, while some of the other questions state that they're the same size as a regular Lego brick. Even though I've never seen Duplo sized windows like that doesn't mean they aren't, Which is it? Duplo sized or regular Lego sized? I may actually have an answer to some of these questions if I knew. – JohnnyB Aug 28 at 2:36
  • @JohnnyB Thanks for taking the time to comment. My apologies for not making the sizes of the bricks and windows more clear, perhaps I should have included a ruler or something for a size reference. The bricks and frames are regular Lego size. I don't have any Lego to check compatibility, but these bricks are generally compatible with Betta Bilda parts, which are themselves generally compatible with most regular Lego. I hope that clarifies the sizes of the pieces in my photos at least, although I can't comment on others you may have seen elsewhere. – Paul F Sep 2 at 20:14

From the LEGO Wikipedia Page "1961 and 1962 saw the introduction of the first Lego wheels, an addition that expanded the potential for building cars, trucks, buses and other vehicles from Lego bricks. Also during this time, the Lego Group introduced toys specifically targeted towards the pre-school market." here is a picture of these first-ever Duplo bricks from the 60'senter image description here look similar?

  • Also, the Wiki page says in 1958 they added the famous circles in the bottom of the brick to help them connect. – thecreative2007 May 27 '18 at 17:39
  • 1
    Thanks for your contribution which has kick started my research of this mystery afresh. The wiki Lego history mentions that Duplo did not go on sale until 1969, so the lack of circular tubes on the underside of Lego bricks would have been 11 years earlier. However, adding 1969 to my Google image search for Duplo blocks did turn up one photo of bricks almost identical to mine on the Eurobricks forum, which showed a set of Duplo as issued in 1969. Mine could still be clones though, because I cannot find photos of the underside with the strange numbers that are on mine. – Paul F May 28 '18 at 19:25
  • My understanding it that Lego use to put the mold numbers in the underside of the bricks. There is a great video on Netflix, the show is called The Toys that Made us, the Lego story is under Season 2 episodes which kind of shows the molds with the numbers that look just like that. – bricknerdz Jan 24 at 20:21

I don’t exactly know if it is LEGO, But it may be an old version of LEGO. The numbers also could be the date the were made or a factory code.

  • Thanks for your thoughts. I suspect the numbers might relate to moulds or machines, so they could monitor how many pieces were produced from them or which one had problem if defective pieces were observed in quality control. The feedback from other contributors has been mixed, but most seem to think they could be LEGO or DUPLO from the 1960s. My question is over a year old now, but I remain hopeful that one day someone who has some solid evidence can confirm what they are. – Paul F Apr 1 at 1:45

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.