Thank you for viewing this item. This is a genuine Canon eye cup for the F-1. I have confirmed that it fits the old F-1. I believe it can also be used with the New F-1. It has been stored in a dark place without being used, so the rubber has not hardened, and the condition is good. Film camera, film SLR, film girl, camera girl, portrait, digital camera, twin-lens reflex, rangefinder, compact film camera, Brony, negative, reversal, positive, Kodak gold 200, Portra 160 400 800, Film Camera, CANON EOS kiss X/X2/X3/X4/X5/X6i X7/X7i/X8i/X9/X9i/X10/X10i/Kiss X50/X70/ F EOS 20D/30D/40D/50D/60D/70D/80D/90D/8000D/9000D, Nikon, fujifilm, Sony, Leica, Pentax, Contax, Yashica, Konica Minolta, Olympus, Sigma, Ricoh, Hasselblad, Zeiss, Voigtlander, Konica Minolta, Nikon, Canon, Olympus, Rollei, old F1, New F-1, AE-1, A-1, T50, T90, Nikon F, F2, F3, F4, F5, F6, FTN, EL, FM, FM2, FM3, FM10, EM, FE, FA, F100, etc. I will be listing other camera accessories, so please check them out if you are interested.