Actually, that thread is almost exclusively about Italian-made Titans: contract-built in Italy for the Swiss importer (who went belly up before delivery) and so the stock was sold off on eBay.
There's hardly anything about Swiss Titans on the internets, but the OP's might be one.
Is it Reynolds 531? What's stamped on the BB shell ("R____")?
And for Chombi: how's that stem clamp the bars? It also looks like a possible original Swiss component, since it isn't like any major-brand stem I ever saw.