Pentax 300mm f6.3 Takumar Preset Lens. Donate $50 to Mu-43.com ($60 if not US/Canada) and this interesting little lens could be yours. Price includes shipping. Feel free to donate more! Price also includes a Pentax screw mount adapter for m43! One caveat - the front coating is uneven, possibly from cleaning. You can see some of it in the picture. It actually looks better in the photo. I am not certain what effect it may or may not have on images. I would have put this out at $100+ if it was perfect. If you factor in the adapter and shipping the lens itself is only $20-$25. Otherwise the rest of the glass looks clean and clear (a few dust specs), focus is smooth and the diaphragm is clean (and almost round!) You can see there is some normal wear and tear on a lens this old. Includes front and rear caps (including the adapter). Once the donation is confirmed by the admins I will ship the lens off (ground). If overseas it may take a couple of weeks. First donation wins.