This is the important one. The version that's the same as Pinkham Smith Serie IV 4 glass 2 groups.
All of the overpriced stuff on Ebay is the later triplet glass, 3 lens 3 group that is less desirable. Most of them bought by folk who didn't know there was a difference then are trying to sell after they learned.
This is in lovely shape. Not perfect, (couple of tiny nicks back glass way out at edges. improper storage some time in it's long years. nothing really.) I can't see any other imperfections, but nothing this age is completely perfect I suppose.
I never got a flange with this one, and never found one either. Re-manufacture is the only possible cure. I used a large "aperture clamp" on 9X9 board when I made images. I'll post some images done with this when I bump it later, if that even becomes necessary.
You may never see another one. Price is firm. I really don't mind keeping it :~'))
$3125.00