E. Francais 10" 260mm Petzval lens f/3.9 covers 8x10 for wetplate

Description

E. Francais 10" 260mm brass Petzval lens f/3.9 covers 8x10 is for sale. It's an amazing lens for wetplate or film photography.
It barely covers 8x10 with a small nice vignette and a bit coma (swirl).
A f/8 waterhouse is included. Shipping is with increased insurance only.
disclaimer: In a recent description I wrongly assumed that it's an 300mm f4.5, but after carefully messuring again I changed it to the correct focal length of 260mm and an appeture of approx. f/3.9.