Shimano Ultegra BB-6500 109.5 Sealed Bottom Bracket BC 1.37 x 24 | eBay
1.37 X 24 Bottom Bracket Netherlands, SAVE 58% - cambridgechoral.com
Shimano BB-CS21 BC 1.37x24 68 115mm Bottom Bracket BSA thread square vintage NOS | eBay
Shimano Bottom Bracket BB-RS500 English Threaded 68 mm BC 1.37x24 Road A20 | eBay
1.37 X 24 Best Sale, SAVE 51%.
I have an old Giant road bike with SORA components and the bottom bracket says BC 1.37x47 Road LK on the non-drive side and BC 1.37x24 Road LK on the drive side.
Shimano Bottom Bracket Bb-rs500b 68mm Bc1.37 Ebbrs500b From Japan for sale online | eBay