You can't tell from that whether it's ISO or JIS or what length it is - 1.37 x 24 BSC means it's a BSC/BSA BB, with 1.37" inch diameter BB cups and a 24tpi thread.
@Brommers started
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You can't tell from that whether it's ISO or JIS or what length it is - 1.37 x 24 BSC means it's a BSC/BSA BB, with 1.37" inch diameter BB cups and a 24tpi thread.