Looking for an image of a 1950 S/D Washington Mint Mark

Can anyone provide a close up image? I have a quarter where the mint mark appears to have some extra material.
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Got a scan?
Not sure it if would help but in the redbook theres shots of s/d d/s Jeffs?
I know,a different beast but its a general guide.
I suspect you know what a OMM looks like anyway.
Got a scan?
(From JT Stanton's CoinResource)