I have a Paternotte that is 50+ year old and in dire need of TLC Is there anyone out there familar with these instruments who can help with the following.

Bridge;
The guitar has had a classical style nylon string type bridge crudley glued on I am sure this is wrong. What sort of bridge is correct? perhaps a floating type a la the rest of the SelMac genus

Machine head buttons :
the machine heads look crude but serviceable and have beautiful huge round amber buttons unfortunately one is missing any ideas on replacements

Tailpiece
currently fitted is a thin tailpiece its nickel plated will only accept loop end strings (not a problem as I will string it with Argentines)and has an engraving of a female ballet dancer on points with strapping thighs and 1940's hairdo,
I'm not keen on the perm but the rest of the tailpiece has a certain charm . I doubt the tailpiece is original and its certainly not like the boring trapezoid on the guitars label, it will stay but what is original