Here is what I come up with:

Those three were taken (accidentally) as ISO 400. Recently lost ISO dial plate from my OM1n and was trying to mark/match iso 50, 100 and 400 positions with other OM1n and forgot to return back to ISO 50..

Developed in Fomadon R09 / 1:100 / 60 minutes / 20c (68f), agitation for first 30 seconds, then stand for 59 1/2 min, then stop bath, kodak fixer for 8 minutes, zonal archival wash and kodak photo flo with 2-3 washes in between chemicals..

First part of the film was shoot as ISO 50 and those frame come up extremely overexposed. I tried to do my best manipulating brightens / contrast in photo editing app: