1970 s cent

this fg looks like the one over at http://www.coppercoins.com/lincoln/dietype.php?date=1970&die_mint=s&die_type=dr&page=0

 

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And the MM looks a bit like this one: http://www.coppercoins.com/lincoln/1970/1970s1mm006pea.jpg

 

Pretty sure that coin pictured on coppercoins is a proof, and your coin does not appear to be a proof.

 

yet struck by the same die... they continue to use them, right?

 

I am not aware of proof dies being used to strike circulation coins, if an expert can give input on this I'd be interested to hear.

 

Not arguing against you noncents but isn't that what happened with WAMs? I'm not sure just asking.

 

With the WAMs, the proof reverse dies were MISTAKENLY used for some striking of the reverse. I highly doubt that a proof reverse doubled die was mistakenly used for the reverse of a circulation strike 1970-s.

 

I'm not saying his coin is or isn't anything. Just thought about the WAM thing.

 

I am not an expert, but as a metal fabricator, I can see the mint using proof dies on business strike coins if they start to wear out a bit. Again, thats just my opinion and Im truly clueless on the mint's practices.

 

Or this could be a proof coin that got out into the wild and beat up. I seem to recall in a previous thread some claiming they did go on to use the proof dies to strike biz coins after the proof run was over, similar to the use of SMS dies for those years.

 

The rims do not show proof characteristics, so I would say no.

 

This coin, proof, used proof die, or biz die, whatever, still seems to share those characteristics, yes?

 

My opinion is no.

 

If you are saying they shared mintmark and/or "FG" , not in my opinion. They are different in each case

 

Well then, how about: what we see on this coin is an example of the same/similar thing(s) which make the other interesting?

 

I don't think it's a doubled die.

 

My example or the others?

 

Your coin.

 

So then, please do explain why mine isn't and the other is.

 

Because the coppercoins example has separation lines and extra thickness that is consistent with a doubled die. Your coin does not.