I wanted to say that after a while, even framed the autograph can begin to peel what has already happened to me, so I decided to switch to mate and I never had any problems and also can have inches in his brilliant photo
 
I hope I have helped

Thank for your answeres What for conservation problems do you mean?

Matte. Glossies retain your fingerprints.

I prefer the mate, why the shiny you can have conservation problems

Hi! As the title reveals I would like to know what you prefer to get an autograph on - mat or glossy photos. Please tell me why your decided for one of the phototypes. Thanks a lot!