I'm not the original owner, and I have no idea how it was stored over those years. Except that the person I directly got it from told me it had been kept outside in a rural barn along with some long unused old darkroom equipment. Given that, I suppose keeping it in a fridge now is probably a bit silly.
I did once spool up a 12-frame roll for some non-scientific testing. Except for some light-struck edges, it exposed and developed out just fine. The edges probably meant that the metal can was not completely sealed light-tight over the years.
Those old slow speed b&w films sometimes seem like they can last forever.