Is This a Proof Coin?

I found in my jar changes a 1971 s penny, which apparently is a proof coin and I can see doublings on both sides. In obverse, doublings are visible in " IN GOD WE TRUST" and in reverse the "D" in UNITED and "M" in AMERICA are obvious. I like to hear your opinions about this coin, please.

 

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Thats a business strike. San Francisco made proofs too in 71, but that is not one of them.

 

Single circulated Coin .

 

Nice rims but they aren’t square enough for even an impaired proof

 

As others have said, it's not a proof coin. Please provide clear closeups of the areas you think are doubled. From the pics you provide I don't see any doubling. The D in UNITED looks like it took a hit.

 

San Francisco made cents for circulation from 1968 through 1974, nickels from 1968 through 1970, and dimes in 1975 therefore in circulation you will find non-proof coins with an S mintmark.

 

M in AMERICA and "IN GOD WE TRUST"

 

Just to clarify - San Francisco hasn't made any clad dimes with an S mm

 

You mean no clad business strike dimes made in SF...