I've done some tests with older films. The results with color are not so good, it ages fast. Black and white can be interesting though. The sample below is 116-format Kodak Verichrome Pan expired in 1968 that I shot one month ago (in a Zeiss Ikon Box Tengor camera) and developed in Xtol stock:
I had an old film tank with a reel that could be extended for the 116-format thats a bit wider than 120. The light leaks are from the edge of the film and from a red window in the camera that is no longer red enough to keep light out. The negatives are quite thin, but this was not a problem when scanning them. Keeping the negatives flat however was not easy. I ended up having to tape them down. A few months earlier I did another roll from the same batch, also expired in 1968:
Here there is more damage to the emulsion. On the other hand, less light has come in between the edge of the film and the reel. I think the result is interesting all the same. I regard this as "toy camera" photography. I get a real kick out of getting results from cameras, film and developing equipment this old.
Of course, 120 format film would have been much easier to handle, develop and scan. All in all, my recommendation is that you do try to shoot and develop some of the film.
Last shot: Kodak Plus-X at least 20 years old (120 format in a Yashica TLR). This was developed in Rodinal 1+100 (stand development for one hour). I think the results would probably have been less grainy with Xtol...
