What's the original name and specifications of this probably 1970s pushback? The bottom of this model is stamped "Mitsubishi towing tractor." Made by Tomica. Bought at a flea market in Kyoto circa 2010. Googling finds only the toy.
I'm particularly interested in what looks like an elevating cab, possibly at both ends.
Details from comments so far: This model is 1:119 scale. The pushback was in use at Tokyo's Haneda airport at least through 1976-78. It's not a Hough T-500 Paymover.
Photos of other pushbacks show that this one is unusual in having four separate cabs, and wheel arches that are perfectly semicircular.