Repost from SSFG but I thought some of you in here may enjoy this and might be able to help me identify the headset.

So, I just picked up a new bike from a guy in town. He raced in the 1996 Atlanta Olympics. The bike was last tuned at the Olympic Trials. The bottom bracket will spin for over a minute with crankarms (no grease was used in the BB, only high grade oil). Absolutely in love with this bike.

Here are some specs:
Mid 90's Custom Built Romic Pursuit Frame
Reynolds 708 Tubing
78 degree seat tube
Campagnolo Record Pista Hubs
Dura Ace Track Crankset
Superbe Bottom Bracket
Headset says "OMAS Italy" (anyone know what this is?)
700c Araya Aero 1 Rear wheel with Continental Track Pro Tubular Tire
650c Ambrosio Aero Dynamic Front wheel with Vittoria Pista Seta Ultra P-D Tire
Cinelli Stem
Cinelli Tempo Ultra-Light Tempered aluminum bullhorns
Selle San Marco Rolls saddle
American Classic Equipment seat post