RPM or chipped die?

Hi all,

I was examining a 1948-S dime under 30x magnification, and it appears that there's some raised chatter around the mintmark. Is this an RPM or merely the result of a chipped die? I found a PCGS CoinFacts photo of a 1948-S S/S, though it appears to be different than the mintmark pictured below.





Any help is appreciated! Thanks!
-CB

 

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Here's a list from CONECA:
http://varietyvista.com/Variety Master Listings/roosevelt rpms 1946-1951.htm#_1948-S

It may be of help.

BTW, it looks like a RPM to me, but read my signature.

 

I vote for punch deterioration rather than a RPM. This type of problem shows up often on copper coins from SF also.

 

hmmmmmmmmmmmmmm...
thinking

 

Thanks for the responses so far. After taking a closer look it seems that there's an S east to the central mintmark. Thoughts?

 

I agree.