I took this headset off an unmarked frame

(frame still un-identified... https://www.bikeforums.net/classic-v...ntriguing.html )

and have been trying to research its origin ever since. I thought I’d solved the mystery when I discovered the FT Bologna “Lega Leggera” headset that was produced in a gold finish but after seeing an OMAS gold finish headset I’m not so sure now?? Unfortunately the locking top nut must have been lost at some stage as there was a Tange Falcon one with the bike.

The style of the headset where the Colnago pantographing is looks very similar to the OMAS “Big Sliding” Headset??



Missing Top nut unfortunately.

Colnago and cloverleaf pantograph is perfect.