That's a British threaded Mirage/Veloce Campag BB. You won't get them with that frustrating scalloped fitting any more. The Centaur is pretty much the only Campag square taper BB still available. This requires a splined fitting tool similar but not compatible with Shimano/SRAM ones. You'll need tha axle length as well.
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Help I'm Being Oppressed
HTH.