What is it? I thought it was a Thonet style bentwood.

I am going to be selling this chair as soon as I figure out what it is. I have the extra cane, but just not the extra time to fix it. I thought it was a Thonet style, but I can't find any other chair, Thonet or not, that looks like this. It has "Crassevig - Made in Italy" burnt into the bottom. Crassevig doesn't look like they would have made this. Am I reading that marking correctly? Any ideas? Thanks!