Coins with the highest "market capitalization"
Which US coins have the highest market cap - that is, the highest total value if you were to try to add up the current market price of all existing examples?
Based on some very rough "back of the envelope" calculations, the highest I can think of is the 1907 St Gaudens High Relief $20. With estimates of more than 10,000 extant, many in mint state, it would seem to have a market cap in excess of US$ 200 million. I believe this far exceeds that of any coin that might be considered "rare".
Can you think of any that would exceed this, or close contenders?
The 1995-W ASE is actually one of the highest, with a likely market cap of around US$ 100 million. The 1909-s VDB is likely close to that as well. By comparison, coins like an 1895 Morgan or a Pan-Pac $ 50 seem be be closer to US$ 40 million or so.
Curiously, if you extend beyond coins with numismatic interest into coins that trade for their bullion value, all of these get blown away by the high mintage ASEs, which have a market cap in excess of US$ 1 billion. Assuming reasonably high survival rates, coins such as a 1964 Kennedy half or a 1964-D Washington quarter will also have market caps in excess of US$ 1 billion!