The script says; "Monogram Portrait, f5 8X10" "Southern Photo Material Co., Atlanta, Georgia" . . .
. . . but this is a rebadged Bausch & Lomb Petzval lens. It is 15 inch focus f5, and it just looks spectacular on the ground glass.
This is a studio lens. It's just too physically HUGE to go out in the field for work. That flange you're looking at is on a 9X9" lens board! Big! Heavy! Substantial! This lens just shouts 'my studio is kickass!'
This features the rear groups that seperate for diffusion. Glass is gorgeous on this, as is all the rest. Aperture is silky smooth. A very substantial piece of kit indeed! $765.00 + shipping