Yashica DSB 50mm f 1.9 in Contax/Yashica mount, in near mint condition, exterior looks excellent and optics clean with very little dust and no sign of fungus or mould, the aperture blades are very clean. The aperture ring and focus ring works perfectly and smooth. The lens comes with mount and front lens cap and a plastic screw-in lens hood BUT the lens cap doesn't fit if the lens hood is on. The lens comes inside a Sigma travel case.
eBay