1967 Washington Quarter Maybe An SMS?

Thanks Coinfrog. The coin is so nice I stuck it in a 2x2 flip to protect it. Regards!

What are the tell tail signs it is or isn't SMS?
John1

I don't know if the theory is similar to nickel and half dollar SMS. I don't remember seeing much Die Deterioration on the SMS coins that I examined. But they are otherwise very similar to business strikes. Probably someone like Tanner could give you a much more specific answer.

from what I understand SMS coin were struck between 1965 and 1967. the difference between a business strike and an SMS coin is that they were struck on higher tonnage presses than business struck coins resulting in an above average strike. as to how to tell the difference I have no idea. maybe comparing it to business strikes for the same year and denomination. my opinion is that the IN in the motto is not fully struck as well as the arrow and tail feathers. there is a considerable amount of flatness in the letters also. if I had to guess i'd say its not SMS

if you say there are signs of circulation its difficult to determine that using these photos so i'll have to take your word on that. obviously it hasnt seen much at all.

Just comparing it to the image catalog on PCGS. None of those SMS quarters have Die Deterioration. The devices are fresh and the fields are flat. The OP quarter has quite a bit of metal rippling on Washington's neck and behind his head, implying that it is a very nice business strike quarter.

https://www.pcgs.com/coinfacts/coin.../images/5999

Also worth noting: there seems to be a credible theory for Kennedy half dollars that the mint retired used SMS dies into service for business strikes. So it's not impossible that this example was struck with a retired SMS die on the circulation coin production line.