This Tecsec lens came with a camera I bought recently but it is far too modern for my collection. Under LED light it does look to be marked etc but just looking through it with your eye none of these marks can be seen. I have checked it out on a non reflex Bolex H16 and it looks very good. Aperture and focus work very smoothly and cosmetically it is nice. Although this is a C mount lens it will not fit any Bolex that has turret turning arms as the base of the lens touches them before being fully screwed in. I have included a picture of the arms that I mean - that camera is obviously not included. Postage is free and any questions please ask.
eBay