Just finished this one. Addressed the ring separation (Thanks to everyone to helped on that thread). Soaked the rusted hardware in evapo rust which cleaned it up a treat. Hoops and clips were in fairly good shape. Strainer was donated from a guy off another forum (thanks Jim!).
The snare guards and clips seemed beyond salvation so I was going to get them replated but after a 24hr soak and polish with metal polish they came up quite well.
I'm still contemplating getting the shell re-lacquered but for now have just waxed and polished it with good quality furniture wax.