I came across this at a really low price and actually saw on the back that there is a S mark on it..Can anyone approve of this and say how much i could get. Im thinking about 20 at the least. JUST CLICK HERE: http://www.cointalk.com/attachments/221584d1355192534-kgrhqnhjewfcmbbukdkbq-t57qsmq-60_57.jpg
Doesn't look like any mintmark to me, but I trust Tom B. I thought the mintmarks on these were stronger? Btw OP, the price of a 26S in particular is extremely dependent on grade. Make sure you are an excellent grader of circulated buffalos before you buy a raw one.
Honestly, I think you guys are seeing things. I don't see any mintmark, just some coloring on the metal that gives the illusion of a D.