Zeiss-Ikon Nettar 517/16 brand_Arca Swiss and this optical system is

and this optical system is excellent

9 lens is in decent shape

6 DG HSM lens is a good quality full-frame ultrawide lens for Canon EF mount SLR cameras

but now you have to pay for them

Zeiss-Ikon Nettar 517/16 brand_Arca Swiss and this optical system isThe Zeiss Ikon 517 16 is a compact folding camera that shoots 6x6cm exposures on 120 rollfilm. It's equipped with a scale focusing 75mm f4. 5 Novar Anastigmat lens in a four speed Pronto shutter. This Nettar is in excellent condition, with minor cosmetic wear. Lens has only slight dust, bellows are good, and the shutter works well. About as close to pocketable as medium format gets. Includes leather case.