I'll bet my left one it's a 32mm outer and 12mm inner diameter bearing - bearing number 6201.
You can send me your left nut now GT, and I will put it on the shelf next to Norbie's......the 6201 32/12 OD/ID does not fit, its the 6001 28/12 OD/ID that does the trick. Send me a sound bite of you cutting your nut off as well....!!!!