what a sad case, looks like a once noble Campy-equipt lightweight with nice lugwork that got a load of crappy bike-boom junk stuck on it and then left to rust. I'm sure it's worth stripping, throw away the stem shifters and claw RD and then give it a thorough de-rusting and waxing. Mariposa? Should never have been allowed to suffer this abuse, hope you can get the seatpost out!