"I can confirm that Campag did produce oversize English thread BB cups. These again were 'overstamped' 1.390 X 24 tpi...the '9' being overstamped on the original '7'. the boxes were also overprinted. I understand Martin Coopland of Classic Bikes has these in stock. Ray ..getting ready for freezing cold training ride in south east England ..Etherton"
Mine are stamped 1.370. The fixed cup goes in ok. The adjustable cup is the problem. It goes in maybe 4-threads-worth and that's it. It's not marked in any special way. Grrr. Who knew? I didn't. Now it's either find some standard-sized british-threaded thin-cups or sell the whole mess on ebay, because only thin cups work with the triple spindle..
Thanks for the news...I think. Wah.