Here is a very rare coin with a recorded mintage of 11. It is the (U) uncirculated 1982 FM Balboa with the mule reverse (has the "Ley 0.500") which is struck in copper nickel. Pictures hopefully in next post....Not letting me to post pictures now so will try later.
I can't tell if some of the marks esp on obverse to right of Balboa might be smudging or scuffing versus reeding marks (from bag? How many in a bag if only 11 struck?)
Neat and congrats. Can you post an image of which reverse was supposed to be on the coin. My searches only find this reverse but in silver. Either way it's a nice low mintage addition. https://en.numista.com/catalogue/pieces70435.html
Well, not sure at all as the FM was so uniform in die production that I am unsure if anybody has attempted to figure out dies. I have the very unusual "pattern" 1983 1/4 Balboa proof with "Ley 0.500" reverse but this was never used on any other 1/4s. What has me a bit chuffed is that I now have all of the FM One Balboa coins in proof and uncirculated in all types. Now if only I could say it was the 500 Balboa series! LOL!!
In my 2016 World Coins catalog it shows this coin valued at/in MS-60-$1,250.00 and MS-63-$1,500.00 KM#39.4 mintage-11 wow. I am guessing the value of your coin has gone higher since then ? Where did you buy this coin ?
Well, there is much not to like as there were some shenanigans in the striking of many Panamanian coins including the OMS silver and golds of 1953 and 1960s as well as the "alleged" 1947 150 Balboas and the "piefort" gold 1982 coins and trials seen in Krause and occasionally auctioned that were done evidently OUTSIDE the US Mint and some of the FM Panama coins possibly suspect; even the OP coin is not beyond reproach although the pattern above is probably a legit pattern from FM.
All of these coins arrived in sacks. Later, they were separated and placed in cardboard holders, but it was too late — they had already gotten scratched.