The original Thunderbirds theme music used on this game is licensed. This game is aimed for Australia, Europe (especially the UK), and Canada, which are markets where the TV series is well known. This is the Export Model. The Chinese model has a smaller door and bill acceptor. This is the Domestic Model. The only part on the entire game that was not made in-factory was the red plastic light dome cover at the top of the playfield. Pictured in this listing is a side-by-side comparison of three different configurations of The Mole target based on the images that we have. In a prototype game, this feature was a "push target" (vari-target) hit directly by the ball in play. There was not sufficient time to develop it so it was changed to be a captive ball as seen in the center picture, the Domestic (Chinese) Model, where the ball in play hit a captive ball which hit the standup target. This version appeared on demo machines taken to pinball shows and it was found that this ball was hard to hit due to the two rubber posts. On the third picture, the Export Model, two captive balls were used and, to allow room for movement, the front captive ball extended outward from the chamber, held in place by a curved metal retainer as a Newton Ball. This was Homepin's final production captive ball that was used in every machine and all prototype machines were updated to this design. All earlier prototype captive ball parts were removed from all test and show machines and retrofitted with this final production design. The manufacturer provided us this description: The Mole push mechanism is a geared motor driving an offset cam that has two limit switches - UP & DOWN. When activated, The Mole model is simply pushed by the cam/rod to the upper position and, when The Mole reaches its fully tilted position, the motor inside the nose of The Mole is activated to spin the 'drill' of The Mole. This Mole tilt mechanism is not mechanically connected to the captive ball in any way. The manufacturer has informed us that their factory fully relocated from China to Taiwan, officially as of Mar-2-2020. All 'Thunderbirds' pinball machines from and including serial number 155 and up are now "Made in Taiwan" by the new company name "Homepin Taiwan Company Limited". No differences are expected in manufacture between China and Taiwan machines and both carry the same model number of 'TAG". The only difference will be the manufacturer's name on the aluminum plate affixed to the back of the cabinet (and the higher serial numbering). Regarding the 154 games made in China, the manufacturer told us that they started serial numbering at "001" although the numbers from 003 to 008 were reserved and used for their factory demos and sample machines. These six machines were built but four of them have since been stripped. As of October 2020, two demos remain, one in the Taiwan factory in their display area (003) and one in Australia (004). Price when new: $4,995.00 USD in Canada The Thunderbirds was a British science-fiction television series using marionettes combined with scale model special effects. It originally broadcasted 1965-1966 and has enjoyed an enduring popularity since.