The on again/off again 1936 Uruguay proof mystery, aka who knows about the Lissner collection?
For over 10 years now I've been picking at this one, and many of you have weighed in.
It started at least in 2006 or before when I spotted an unlisted proof for sale at Northeast Numismatics and bought it. Every couple years or so something pops up and gets me interested again. Here is one old thread about it (a messy mess of a thread, but it gives the idea):https://forums.collectors.com/discussion/comment/8888647#Comment_8888647
Basically, in 1930 Uruguay celebrated its 100 year anniversary with freshly designed coins, including the lovely puma 10 centesimos. Designed and minted in France, and the design elements clearly show the marks (cornucopia and torch) associated with their French point of origin.
In 1936 the design was adapted to a smaller planchet, retaining the puma and sun reverse but losing the anniversary legend and the French marks. Instead an 'A' mintmark was added.
Other than the strike and look (watery fields etc) I have yet to discover any specific feature that it is a proof vs. circulation--for awhile I toyed with the idea it was reeding or lack of reeding because all the ones I'd seen up to that point were in the old style NGC slabs and no reeding was visible. Since then I've seen a PCGS (but they call it a specimen not a proof) one and another in an old slab that was off kilter enough to see that reeding is present.
The Uruguay Mint states Austria/Vienna was their minting location. The Austrian Mint email I sent returned with basically "we have no information about these". Stymied! However, there are definitely several references to the Austria point of origin from various sellers (buried in that old thread and won't rehash here).
A dormant mystery, BUT I just bought this one on eBay and was able to dig up the coins prior sale at auction in 2014 via CNG. Negotiated the price down a bit (dude still made a sweet profit) and bought it for no other reason than it does make my beloved puma coin seem more likely to be a proof striking of SOME sort or other. Perhaps pieces made to clinch the deal win the minting contract? Proofs made but never released? Austrian mint employee shenanigans?
In 2014 the Lissner collection was sold by CNG, including this very coin as well as the 1, 5, and 10. The coins are described by CNG as unlisted in Krause and they speculated the A was for Paris, Berlin, or Vienna as the potential mint sites. Specifically (from the catalog) “Considering this piece was a duplicate of the Austria Mint collection, we consider Vienna to be the likely source”.
Either way, its just another piece in the Puma Proof Puzzle of 1936.
So who knows about Lissner?