Serial# WE17 580 = 17,580th frame produced in 1985 for the US market?
Headset Campagnolo
Friction shifters Campagnolo
Rear Derailleur Campagnolo, no marks except on bolt head and pulley wheels
Front Der. ?? not marked
Tange 2 Cromo double butted sticker on seat tube near top
Sticker on seat tube above bottom bracket "Japan"
Brakes
Rear Dia Comp code 1285B
Front Dia Comp code 1085B
Decal on lower left stay "Handcrafted by Kawamura"
Decal on downtube above bottom bracket "Race/Sport Frame Geometery"
Sugino crankset, 175mm arms
Handlebars "Winpipta"
Stem aftermarket
Seatpost aftermarket
Saddle aftermarket
Rims Arraya 700c

Just bought it off Craigslist. The bike needs cleaning and new tires, but otherwise OK. Been in storage for many years.

One thing I can't figure is the Campy shifters/headset/derailleur. Were those options/standard, or has someone upgraded later? Will get pics when I can.