Hi
I have four Dallmeyer lenses of varying types all from the 20C. I have an idea which decades they are from, does any one have more precise dating methods.
Here is a list with serial numbers.
5 1/4” ƒ6 No 2 Stigmatic Ser II, 68013/9. Numbers for front and rear cells.
8” ƒ4.5 Serrac, 269181
4 1/4” ƒ6.5 Wide Angle Anastigmat, 530713
5 1/4” ƒ6.5 Wide Angle Anastigmat, 478362
thanks
Alex