Box design for Popular Mechanoids Premium Collectable Trading Cards

One of seven different box designs for Popular Mechanoids Trading Cards. Each one featured a different 'cut-away' cross section of one of the Mechanoids in the set. The back of the box offers Free Collectors albums, and refers to the second 'Blue' series as 'Steel and chrome', rather than the official titled 'Valve and Steel' set. Closer inspection also shows the spelling of Collectable as Collect- 'ible', indicating this was earmarked for the American market and the date, 1946, giving this away was one of the first box sets produced. One other large anomaly is the suggestion that there were only 88 cards in each set. An omission of over 1500 cards! Either this was a marketing  strategy to bring out further sets in the future or in early 1946 there were only this many cards in print, since there is no record of the number released in the Lamprey .33 packets during the late 1930s.