SMC Pentax-FA SMC 28-90mm f3.5-5.6 battery door There's no effect on the

There's no effect on the function of the lens

including a scratch in the viewfinder cover: won't affect picture taking

Bounce-back disc

released in 1957- that's a good three years after the much more modern M3

It is sold as-is for parts or repair

SMC Pentax-FA SMC 28-90mm f3.5-5.6 battery door There's no effect on theThe SMC Pentax FA SMC 28 90mm f3. 5 5. 6 is an autofocus zoom lens designed for Pentax autofocus film cameras but this is a standard K mount lens, so it'll work just fine on any manual focus K mount camera, too. In excellent cosmetic condition, with minor paint wear on barrel. The glass is in good condition, diaphragm is clean, and focusing action is good.