Cleaned and greased the BB on my "new" 73 Raleigh Competition and found one of the spindle bearing surfaces is pitted/eroded, probably about 1/3 of the circumference. It's a 3 arm TA Pro 3 crankset.
It's marked "TA 344" on the spindle - looking on Ebay, the price for a replacement is unreasonable.
The spindle is 114.5 mm wide with a 5 mm difference between drive and non-drive side.
Looking around the web, it appears that most agree the taper is more or less JIS. Someone said they put a 115 cartridge BB in and it worked fine.
I was thinking about trying a 116 with 2-3 mm of spacers on the drive side, should get me in the ball park.

I likely won't be putting a lot of miles on this bike, what would happen if I just ran the pitted spindle and keep an eye on it every season?