I recently came across a similar Aoshima kit from Japan that I bought a few years ago. It has been sitting in a box for several years.
This is the Thunderbirds Tracy Island set, which includes the five main Thunderbirds craft. There are a number of working features. Some are battery operated, others use springs. I am just not sure I could actually get everything to work.
The kit is moulded in several colours. Sand for the island itself; along with red (Thunderbird 3), green (Thunderbird 2), brown (tree trunks), and white (Thunderbird 1, Thunderbird 4, Thunderbird 5, and various buildings). Blue and clear plastic are used for the various internal fittings and controls. The palm tree tops are moulded in a soft green plastic, and there is also a bag of green lichen for additional ground cover. There are two motors, and a bag containing several smaller bags of wires, gears, and other complicated looking bits, in both metal and plastic. There is also a small decal sheet.
Despite coming in a large box (16 1/2 by 12 1/2 inches, and 4 inches deep) the set is obviously made to a very small scale. Tracy Island itself measures 15 1/2 inches by 11 1/2 inches. This was my most expensive kit ever - the price sticker says $124.00 NZ.
The shop only got in a few assorted Thunderbirds kits, just a fraction of the range. This was the only one that I got, as they were all expensive. According to my copy of The Gerry Anderson Memorabilia Guide, by Dennis W. Nicholson, this set was originally made by Imai, another Japanese company. There are several copyright dates on the box, the most recent being 2013.
I found a very short You Tube video showing this set in action. The vehicle launching systems seem rather violent, and I am not sure how long the models would survive.
Do you have this kit?
Paul Adams from New Zealand