hi ron!
pleasure was mine .. i
i bought a bunch of film a few years ago
all 8x10 and wicked expired, its sitting in boxes in my darkroom on the shelf
i think it is from the early 70s/ late 60s
i've been meaning to pull them out, load them and expire them
but unfortunately life gets in the way sometimes.
i don't think i have things much older than that .
except for some dry plates in a box
"vintage"
oh, regarding your film ...
(there was a url link here which no longer exists)
suggests it was iso 500!
i think folks suggest halfing the iso for every 10 years
so you are down around ( 250, 125, 60, 30 ) maybe iso 30?
no idea what to process it in, maybe something strong and fast like print developer with potassium bromide
i'd do short and sweet so maybe dektol 1:5 for 5 mins ? or if you have ansco130 1:6 for 6mins ...
have fun !
john