COSMOS ROAD BIKE (SIZE L/XL) IN SOUTH AFRICA

I bought Cosmos from an ex-colleague that emigrated and has been is use on my trainer for around 2 years. Its last service was at the end of last year. Its unfortunately slightly too big for me to use on the road. Sizing could be L to XL. Unfortunately no sizing on the bike. Top tube measures 57cm. Stem is around 130mm. Not sure on its age - but from basic research late 80s to early 90s. The bike has a full Shimano EX500 group set on Ritchey Vantage wheels. Price is negotiable. Frame & Fork Cosmos Front Derailleur Shimano EX500 Rear Derailleur Shimano EX500 Shifters Shimano EX500 Crankset Shimano EX500 Cassette Shimano Chain Shimano Wheels Ritchey Tyres Vredenstein Stem Quill (not sure on brand) Handlebar Not sure on brand Seatpost Not sure on brand Saddle Turbo Pedals None