Shopping for a bit of photo history

I'm on the lookout for a pair of 8" Petzval portrait lenses. If you know of a source for these please send me a message. These lenses were made starting in 1840. They are characterized by extremely sharp center of focus with a quick falloff to a swirly bokeh. My plan is to try to adapt them to fit on the Gowlandflex, so if you have any experience with this also please let me know.

-Michael