Zenith Bijou Standard 21 Archtop acoustic guitar

This 50s archtop acoustic is a Zenith Standard 21 “Bijou”. Zenith guitars were made by Framus in Germany and re-badged Zenith by the importers, who were the major instrument distributors Boosey and Hawkes. This one has Ivor Mairant’s signature in ballpoint pen on the label inside, but I don’t know if it is the …