I have a 1973 Lincoln cent where the collar of the coin seems to be raised, or another way of saying it is that the obverse seems to be lower set in this coin than another cent that I compared it to. Is this an error type and if so, of any premium?
Can you post a picture or scan? Was the comparison coin a 1973 as well? If so, I'll have to defer to the experts, but otherwise I will share my observation that lincolns minted in the early to mid 1970's are much like you described, resulting in much higher collars and sharper details than more recent coins. Which is a question I've been meaning to ask....why is that so? My guess is that the minting technique was different at the time.
Oh my loool...they've changed the style about 11 times since then(including the 7 variety '82 cents)!!
Wouldn't that result in a die crack? I didn't look for one, but since it' snot a proof coin., no one would care anyway if there was one...
The 1998 and 2004 are much lower relief than the 1973 issues. Also in 1973 the master dies were completely redone resulting in a much sharper image.
