This box of antique Agfa Isopan-F Platten Feinkornig 13x18 photographic film plates has been opened but appears to be full or only missing one plate. There is no expiration date on the box. While it is certainly risky to use plates that are probably 100 years old, we've seen very old film and plates work using special developing techniques. If you buy, just keep the risk in mind. We do not know how they have been stored. As unlikely as it is, we do not know if the box has been completely opened exposing the plates.