Interpolating from the recommendations there, and using Sunny 16 as the standard, I read the sensitivities of Verichrome Pan, Plus-X and Kodacolor to be equivalent to the current ISO of 25, whereas Super XX sensitivity appears to have been equivalent to the current ISO of 50.
This is the same as Jason's initial observations.
Well then I may have way under-exposed my verichrome pan 127 roll just now LOL shooting it at EI16 based on an assumed ASA of 64 (before the standard change).
~Stone | Sent w/ iPhone using Tapatalk
~Stone | "...of course, that's just my opinion. I could be wrong."~Dennis Miller