1890-1900ish upholstered gynecology physicians chair

I can't seem to even find a photo of a similar chair online. From what I gather it's a "physicians chair". Was not able to look for proof marks but from my brief inspection it's in surprisingly good condition. All the adjustment mechanisms are functional and the stirrups are just plain neat. I just found it sitting in my customers back yard where it got a bit wet so I thought Id see if he wanted to sell. Price he's asking is a bit steep to just buy willy nilly. Although not being able to find any info makes me wonder if it's a rare find or just an oddity. Any info would be greatly appreciated. Thanks so much!