Originally Posted by orangeology

i was able to contact my friend who originally owned the bb. he still has the spindle.

and it says
68-SS-120 in the first line, X3-Z in the second line.
about 116mm (bit over 116, he doesn't have caliper), asymmetrical.
appx length on: left to the flange - flange - between flanges - flange - to right is
27 - 2 - 51 - 2 - 35

and the shape of spindle is definitely more modern than the one for 1st gen Record in the link above.
unless they were mix-matched somewhere long before, i still believe it's a GS, triple? 120 is meant to indicate rear hub width.

*EDIT*
the closest match overall (except missing "Z"):
Campagnolo 744/1 Nuovo Record Triple , produced in late '60 to late '70
http://velobase.com/ViewComponent.as...=119&AbsPos=18