The Tiger tank bought by the Japanese government that could work as tier VI-VII premium in the game with the future release of the Japs in 8.10 update.
By the way the 1943 Henschel Tiger cost 295k Reichsmark for internal usage, while sneaky Germans managed to sell it to Japanese at a much higher price - for 645k. The Japs must have been over-diplomatic to bargain. The vehicle however never touched the Japanese ground because of "transportation issues" and - as rumour has it - ended up fighting somewhere in Italy.
For in-game version might want to change tracks a bit and make this tank more "amphibious" to give it a more Japanese look.