I mentioned in an earlier thread taking a slightly different approach by creating a hanging frame in the form & livery of a backbox & inserting the game flyer.
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Just completed a frame for my Raceway but also included x2 Dinky cars (a Talbot Lago & HWM) from the same Dinky series of those in the animated backbox.
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Cars are held by magnets so cars can be removed if my Grandsons want to play with them as often happens.