Name a coin that has a low mintage figure and a low survival rate?

Just want to make sure we have all the bases covered 
How about the 78-S half? 12,000 minted, perhaps 60 survive. 0.5% is a low survival rate for this period.

How about the 78-S half? 12,000 minted, perhaps 60 survive. 0.5% is a low survival rate for this period.
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Comments
268 struck, 3 extant (survival rate just over 1%)
- Marcus Tullius Cicero, 106-43 BC
I give away money. I collect money.
I don’t love money . I do love the Lord God.