Bill Steen D310 auto question
 

Hey all,
I've had this card for awhile now, and always thought it was something written on the card by someone who owned the card. Last night I was looking at it, and thought "Maybe this is an autograph?" I found a couple certified autos on ebay, and the signatures look similar in some respects, but different in others. I am not a big autograph expert, and can't really come to a yes or no in my head, so I thought I would solicit some opinions from here. I don't want to send it in and spend money getting it certified, I will keep the card either way (I collect this set, it would be pretty cool if it is his autograph, but still cool anyway). The letter is a bonafide letter Steen wrote. Any thoughts? Thanks.

Ed