I've always been curious about the authenticity of this piece I own and want to know what others think. When I was a kid, I sent a fan mail letter to Derek Jeter asking for an autograph, and was sent this 8x10 photo.  If memory serves me right, the letter was sent to Yankee Stadium, but I wouldn't swear to it because it was a long time ago. I don't remember the exact year, but I want to say this was in 1998 because the photo is a posed shot with Jeter and Chuck Knoblauch, who wasn't a Yankee…See More