Yeah... was a bit tempted to get the first post Soviet Russian set.. but decided just the Soviet set will do..
https://moneditis.com/2016/04/26/monedas-conmemorativas-cccp-urss-ussr/ All USSR commemorative 1, 3 and 5 rubles (including 10, 15, 20 and 50 kopeks)
Actually if you are to complete this set, try looking for 10 ruble coin with Moscow mint mark and 10 ruble dated 1992 with cccp. Very hard to hunt down!
I am unaware of the existence on a 1992 CCCP double. Please provide evidence or reliable reference. I know about the Moscow mint mark but I am not interested in chasing mints.
The 1992 10 ruble does exist in various references. Not sure what you are using One example on offer https://www.ebay.com/itm/USSR-Russi...624417?hash=item3b3db94ca1:g:06MAAOSw63teBGz1
I do not believe it is an error. This is a rather well known example where the mint was a bit too proactive and had coins prepared in December and struck them. Most certainly it was accidentally released and is quite scarce however I have seen at least 10+ examples sold.
Error was just how Krause put it. It shouldn't have been released but did so anyway. They are quiet scarce but no way am I paying $1000 for a worn circulating coin of non precious metal make
They are that scarce Loong. The same also applies to Soviet coins struck in 1958 as they were accidentally released too in the public.
Again it's a difference in opinion. Hardcore collectors will only appreciate the history and rarity, thus the price. I'm not a fan of boring bold 'cccp'. That said there is one exception which is a coin struck in the last year of the Soviet era. It is also a coin struck in 14k which is very unusual