Kodak Enlarging Ektanon 7.5" f4.5 lens mount_Mamiya 6 lens for the Canon FD

lens for the Canon FD mount

and the only ones with interchangeable lenses

The Contax auto extension tube set for Contax-Yashica mount includes one each of 13mm

The Zeiss Ikon Nettar 515/2 is a folding 6x6 camera with a 75mm f4

This is a wood handle for the Pentax 67II medium format camera

Kodak Enlarging Ektanon 7.5" f4.5 lens mount_Mamiya 6 lens for the Canon FDThe Kodak Enlarging Ektanon 7. 5" f4. 5 in a large format enlarging lens, suitable for 4x5 negatives. Some cosmetic barrel wear, light coating wear not perfect, but a good working lens for enlargers (or large format camera projects). Rear thread mount is about 58mm.