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.
Sept. 2020 edit before the bounty expires:
The toy is from a box labeled ジャンボエアポートセット ミニカー
which translates as Jumbo Airport Set Minicar. The UPC code is 4904810 26441 5 (or 8 instead of 5).
These sets are sold at the Japanese ebay. Can a Japanese speaker glean any clues from the back of the box? (I can guess at the kana, but not the kanji.)