The post said it was an "s". I would be leary of not being able to see the back of the coin. This is an item I would want more time to research before buying. The mint mark is located on the back of the coin as shown on this "o" morgan. Just between and above the d and o in dollar. If you miss your chance at this one you can bid on the graded one that shows up later on. It's a little more expensive but it is in superb condition and is authenticated.
Wait...don't buy this one....you should be able to find another one at a better price--if you really want it I wouldn't go over $20 Speedy
any coin that you (or anyone for that matter) need to ask if a price is good enough is a coin that you shouldn't buy. If a person doesn't know what is a good/fair price for a coin then they need to do more research (from books, preferably) before spending their money.
In the Post reply window, below the text section, there is a section titled Addition Options. In this section there is button that says "manage attachments". Click that and use the browse and upload feature to attach the pic file from your CPU to the server.