Sigma 1:3.5 f=200mm MULTI - COATED PK mount # 200143
1 : 3.5 f = 200mm
Pentax PK mount
Bought from Salvation Army in Gresham as part of a lot selling for $.69 each. Lens looks pretty good but something is broken and missing from the aperture setting ring. Aperture setting seem to work OK though. Aperture is oil free and snappy. Glass is clean and clear. For PK mount.
Seems to be a very rare Sigma lens because I can't Google one like it.