It certainly isn't a 1994 model, and as the build date is May 93, I think it must be a 93 Clockwork as the 93 Prestige had a different seat tube that was narrowed as it met the bb shell (Tange Prestige).
I have now found some pictures of 93 Clockworks with no chainstay bridge, so as it turns out that isn't an identifier between Clockwork and Prestige.