I have a Puch Mistral, 14 speed, late 80s (made in Italy). I know nothing about tech details, so the following are just random words and figures to me: Rivus 610; Exage 300 EX; Shimano BIOPACE 40; MCCF Bristol BS 6102-1; Ambrosio Clincher Elite; Oria TCO.8 Hi-Tension 3 Tubi. Any idea of value (works perfectly; some rust on paintwork)?