I got this razor in for edge repair which was stored for 4 months.
The rust & pitting didn't make sense as I know the owner doesn't wet his razor during the shave , just wipes dry.
I also know he uses a quality WD oil.
Turns out he regularly checked to see that it was well oiled by running his fingers on the body of the blade & tested it by shaving arm hair on occasion, never cleaning off & re oiling.
A trap for young players especially those with acidic skin chemistry.
Keep your razors rost frei :)