I still suspect that it's a 92 or 93 Clockwork and not a Prestige, because it has the two rack eyes on the dropout as the little bike I pictured above has. I personally can't see rack eyes there on the Prestige in the brochure, and nor on any of the photos I have (see example below)
I can't quite tell from your pics whether it has a flat top to the seat tube, or is that a shim? The one below looks a bit like a shim, so maybe all Oranges had slanting tops to their seat tubes when they used those lug things.