Even a rare bicentennial quarter is unlikely to buy an Alfa Romeo, but collectors can pay a lot for them.
This type of bicentennial quarter is probably the one that people want the most. There were very few times when proof quarters made in San Francisco were released without the "S" mintmark.
1
Even though these coins are very hard to find and can fetch big prices as collectibles, they would still be worth a lot less than an Alfa Romeo.
Bicentennial quarters were sometimes made on planchets meant for 40% silver coins like Eisenhower dollars by mistake.
2
Because they are rare and contain silver, these error coins can be worth a lot to fans. However, their value would still be much less than the price of an Alfa Romeo.
Collectors really want the deep cameo Bicentennial proof quarters that were made in San Francisco. The frosted design elements look nice against the mirrored areas because they are different from each other.
3
Even though these coins can fetch high prices, they are still not worth nearly as much as an Alfa Romeo.
Adding these coins to a numismatic collection can be profitable, but their worth is relative to the coin collecting market and would not approach an Alfa Romeo.
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