File this under "things you'd think that I'd know, but never did until today":

There are no quarters, half dollars, and one dollar coins dated '1975'.

The US Mint made special bicentennial designs of these coins in 1976, but I never realized they started in 1975.

And regardless if they were coined in '75 or '76, they bear the date "1776-1976".

I guess I never knew that because I never collected quarters (besides hanging on to bicentennial ones). I collected pennies, nickels and dimes, but quarters were too rich for my blood. The same with half dollars and dollars, there were too many neat things to buy with them.

But still, you would have thought I'd have known this ...