Hi All,
I also believe that these heavy cuffs are of German and not Russian origin, because of four reasons:
1. all of these cuffs I know came from East German. The seller at your auction lives in East Germany and my heavy handcuffs as well as my heavy handcuffs / leg irons combination (see picture) were purchased from East German dealers, too. Moreover I know one more collector who also has such a combination and he also lives in East Germany, where he bought this piece.
2. all other Russian handcuffs are made differently - much lighter, less complicated locks. But old (pre WWII) German handcuffs are often made in such a heavy and bulky way (e.g. Berliner, Dortmunder or bar handcuffs).
3. I had experience exchange with two Russian collectors and none of them believes that such handcuffs were ever made in Russia. Moreover one Russian collector told me that leg irons and combinations are banned in Russia since the revolution of 1917. I don't think that the restraints are older.
4. one of Cuffsland's customers, a gentleman who is over 60 years old, told us that when he was younger he has seen a documentation in the former GDR TV about the crimes of the Nazi regime. In this documentation he could see a part of an original Third Reich recording about a trial where the "delinquents" where chained with heavy and bulky handcuffs, which looked like the Early GDR Vopo Model 1 - after I showed him a picture of the "heavy Russian handcuffs" he told me that it might be possible that these where the handcuffs of the documentation. It's unlikely that the Nazi regime used Russian stuff.
Best regards,
Guenter