[AbejasAsesinas]

I recently picked up a rather large, signed canvas print that was framed without glass. The signature is in blue sharpie. Do signatures on canvas last longer than on photographs/posters? Or should I have this piece re-framed in order to keep the signature in original condition?

Thanks ahead of time, and I promise that one day I hope to contribute more than asking constant noob questions.

Cheers,
Dan