I know nothing about this item or about photography per se - but I believe it to be a good quality item.
Vintage SIGMA Mini-Wide II 28mm F1:2.8 SLR Camera Lens 52mm Box Case - For Canon
Canon Lens FD 24mm 1:2.8 vintage 35mm film SLR camera lens 2.8/24 set
Vintage Pentax-F Zoom 28-80mm SLR Camera Lens
Sigma Mirror 600mm F/8 Multi-Coated CAMERA LENS For Minolta MD MOUNT x700 x300
Sun Actinon MC Auto 1:4.5 70-210mm Zoom Macro SLR Camera Lens Pentax PK mount
