Ill venture into one of these dangerous collector's threads just to re-ask a previous question..
Why do the team signatures lessen the value of the jersey?
Serious collectors like the jersey to come to them like it came off the ice. (washed, too, for health reasons although the Devils didn't wash the Retro jerseys in 2010 and 2011).
Adding a signature changes the jersey from the way it left the ice. It's adding something that wasn't there or should be a part of the jersey on the ice. Why spend hundreds and thousands of dollars on a game worn jersey to autograph it when you can buy a non-gamer for way way less and sign it?
As far as value goes, a signature can and will devalue the jersey. Same thing holds true in sports cards when a player has a rookie card auto'd. You're taking an item thats held to a different standard and modifying it, wether it's a rookie card or game worn jersey. That's the hobby. That's the way it's been before and will be after we're all gone. It's a practice that's been followed. Don't shoot the messengers!
IMO, it begins and ends with preference. It's just something that should be thought through first. Unless you're buried with the jersey, you're going to take a bath on it resale wise should you need to ever sell. Since life is unpredictable at best, it is a smart thing to keep in mind. If you feel the need to sign a gamer, most serious collectors will accept a jersey signed on the fight strap or behind the crest.
I've bought signed gamers for well below market values and had the auto's removed safely and without damage. You just can't do that with these types.
NJDevs.com 2008-09 Hobey Baker Award Winner, Rookie of the Year.