That would be a Canadian Nishiki, when the company was a subsidiary/division of Norco. They owned the Fiori brand at that time as well.
Shimano Sport LX stuff was a step down from 105, IIRC. So, the Silhouette was a high-end recreational bike - not quite considered race quality.
It's not really rare, in that there were hundreds of dealers in Canada selling those bikes at that time, and it isn't a particularly high-end model, but it's a decent bike that's worth taking care of.