1978 Soviet 10 rubles (Pole Vaulting) - https://en.numista.com/catalogue/pieces31615.html
Coins are BU and come in capsules (the capsules are a bit scratched and one has a crack, but coins are not impacted). Asking $18 each.
1992 Cook Islands 50 dollars (Pedro de Alvarado) - https://en.numista.com/catalogue/pieces147667.html
1993 Cook Islands 50 dollars (Pinzon Brothers) - https://en.numista.com/catalogue/pieces90303.html
1993 Cook Islands 50 dollars (Amerigo Vespucci) - https://en.numista.com/catalogue/pieces147700.html
The 1992 has some marks in the field, it didn't circulate but has definitely been in contact with other coins and you can see circulation like marks. Asking $16 for that one. The other two are nicer, some very minor marks present but definitely still uncirculated. Asking $18 each for those. They will come in crown sized 2x2 cardboard holders.
Payment via paypal or swap for 90% US junk silver at melt value (but payment is preferred). Shipping is $3.50 in the US, $14 for international unregistered (with just a customs number) or $30 for international registered (with a tracking number). My prices are cheaper than ebay but I don't think they are cheap enough to cover the very high cost of international shipping in the US. Still I do make it an option if someone wants to pay. If we do a trade for junk silver then each person pays their own shipping, and that offer of trade is only valid in the US.