Hi: I'd be grateful for help placing a value on this bike.

First two numbers of Serial are 71
Columbus Frame
Signed by Marinoni on the top cross bar
Cinelli Campione del mondo handlebars (sorry if my lingo is wrong!)
Shimano 105 braking system
Other Shimano parts
Specialized Pro (France) Tires Mavic MA40 700 x 23C size /construction 60 tpi/aramid bead, all weather performance compound
Avenir Pedals
Regal Leather Seat with Copper Brads (looks orig)

Frame is Large approximately 63-64 CM

Shimano Biopace Computer Designed Drive System
Shimano Derilleurs