Unusual Pre-war Baykco Light Construction set no. 5English, including two roofs and parts in brown, green and white, with instructions for outfits 1-6, unchecked, circa late 1930s (G box P); and an Australian Ezy-Bilt no. 8 construction set, unchecked (a lot) (a/f) Bayko was a pre-war construction toy manufactured from bakelite. Bayko was made by Plimpton Engineering, Liverpool, England between 1934-1959.