I'm looking to replace my cup and cone bottom bracket as my current one has deep grooves on the spindle. Because for some reason replacement spindles (113 total width, 68 shell width) are very difficult to find (please comment if that's the case in general - I could find only 2 auctions for a 113/68 spindle on some shady websites), I've decided to look for a cartridge bearing bottom bracket.
The only Italian threaded, square taper ("cottorless"), closest to 113mm - 113.5/68 - bottom bracket I could find in Poland is the Neco B910. The problem is that none of the auctions, nor the manufacturer's website mention whether the square taper is ISO or JIS.
The manufacturer's website says the spindle is 10B21 but that seems like an internal codename, so no luck here either.