Mint marks

[hostagedk]

I'm 100% new to CRH and I'm starting to get interested in doing it as another hobby.

I've been reading up a ton on list of coins to look out for and things like that. However, one thing I keep hearing is about Mint marks. I understand why they're there far as where they were made far as Philadelphia or San Fransisco or Denver. However, I seen one coin listed to look out for was a 1990 (no mint) I'm not sure what they completely mean as when I look at all different dated pennies I see no S or D listed. Am I looking at the wrong spot? Shouldn't it be listed right near the date?

 

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[enamel7]

Phillip mint marks used to not be under the date, they weren't on the coin at all. The 1990 no mint mark refers to proof coins missing the S mint mark.

 

[hostagedk]

Phillip mint marks used to not be under the date, they weren't on the coin at all. The 1990 no mint mark refers to proof coins missing the S mint mark.

Are the 1990 proofs rare then? I literally found 3 1990's with No marks.

 

[mxh5891]

Are the 1990 proofs rare then? I literally found 3 1990's with No marks.

Are you sure they are proofs? Proofs are mirror like in appearance and have much more shine then a standard made for circulation coin. I imagine what you have found is just 3 regular 1990 Philidelpia minted.

 

[enamel7]

Yes,regular 1990 Philly mint coins don't have mint marks. The only way you're going to find a proof without a mint mark is in a proof set. I would almost guarantee they have all been checked for the error.

 

[hostagedk]

ah okay, thanks for the help. Like i said this is all new to me and i'm actually enjoying learning all of this. Seems like it will add some fun into the hobby.