MOPED ARMY

It's probably in the 1959-1963 range AU or AV88. There will be a date code on the back of the carburetor which will date it fairly accurately.

For some of the common things you can get them from treatland (tires, tubes, petcock, cables, chains etc). For Body parts you'll want to try ebay.fr. Some stuff can be found on the US ebay, but you'll have to watch often and it may take a while. Other parts can be substituted if you dont mind it being an exact match (horn, seat, tail light).

Nice looking diamond in the rough!