Originally posted by toukan There are a couple of what appear to be scratches in the lens coating, one of which looks to be over half an inch.
Front or rear? If on the rear element, they may impact image quality. In any case, a lens with visible scratches on the optics is not E+ or even E-.
Is it safe to assume that this is a Pentax-M 200/4 or the almost identical XR Rikenon 200/4? If you paid a premium price (more than $45 USD), I would suggest a frank discussion with the seller. If you paid $30 USD or less and the scratches are on the front element, I would say "no harm, no foul" and just leave neutral feedback with appropriate comments if an eBay transaction. If the scratches are on the rear or internal elements (evidence of botched cleaning to remove fungus), I would suggest that full refund might be in order regardless of price paid.
Steve