Googled it... These are very rare and weren't supposed to be released to the public. Izzy shouldn't have had them in the first place... Whether theft or misappropriation. Th family narc'd on themselves as thats what a son or son in law requested before his death.
This ruling has gone back and fourth through the levels leaving the SCOTUS to hear and decide.
At the very least there should be a trade, but the value in rarity will be tricky. They are very well "Historical" and should be preserved for/as such one way or another.
RE: Feds Snatch $80 Million in Rare Gold Coins from a Family Inheritance