ADRIAN BELTRE Game Used 2015 Cycle Helmet...should I get it autographed?

[David Murphy collector]

Hey guys. I own the helmet Beltre wore when he hit for the cycle last year. He also wore it before that game as well as into the postseason. I've matched it to multiple HR's and its definitely one of the highlights of my collection. I've been thinking of having it signed, but I'd like opinions on it. If I ever decide to sell it, do y'all think the signature will increase or decrease the value? I probably wouldn't send it off to have the auto authenticated. I'd be to worried about getting it back lol. Any opinions will be appreciated!