I would avoid Mario if you care about getting your poster back in a timely manner, and also if you care about the quality of the work. I had a really bad experience a few years ago and the poster was basically a total loss (a 1920s one of a kind window card). I had to email him for 3 months, rarely getting a response, and when I finally received the poster, he had just painted the entire piece (and not even the color that it was originally). The piece wasn’t even glued properly to the backing board, and was falling off in multiple places. Truly awful work. Other people have had major issues as well with him.
Use Fourth Cone Restoration. They are top-notch, work quickly and are collaborative about what is being done. You won’t regret it!