63 Mayo Composite Aircraft (1939-1941)

Second type box with diagram of the Maia Flying boat. This box dates from December 1939. John.

Obviously not a Dinky, I found this huge model (at least one meter lenght/wingspan, I presume) of the Mayo Composite Aircraft in the Luchtvaart- en Oorlogsmuseum (Aviation and War Museum) on the Isle of Texel (NL). I wonder if more such models do exist. Kind regards, Jan