In the new Sandbox, players can play unique tanks for supertesters:
- ISU-130 (USSR, TD-8, premium) – a unique tank destroyer
- Black Prince at tier 6– A43 BP prototype (Great Britain, HT-6, premium), which was previously only supertested and was never released.
ISU130 is an old premium that was given to CCs and WG later sold it. Its by no means a new premium and arguably one of the older premiums in the game.
you can also try the Type 59 there! Maybe that will finally kill all that hype.