I've had this lens stored away for a few years. It is a manual focus lens that requires a t-ring for your 35mm film camera. It's a "formula 5" brand 500mm f/8 lens. I believe it is a "preset" and has f stops between f/8 and f/22. Condition of the lens is excellent. Original lens case included.
price is $50 which includes shipping by UPS ground CONUS
I will throw in a t-ring for a 35mm manual focus Olympus camera for another $10
I accept paypal and money orders. I do not ship internationally.