That stands for artist trading cards. The ttt have been busy swopping cards and one of mine was from the wonderful Gabi from poppydreamz, take a browse through her amazing shop.
I wonder if she has a fleet of fuel injected carrier pigeons, because she posted these gorgeous cards on the 1st Aug and I got them here in the UK today, 5th Aug!
Here they are:
I love the colours and the intricate designs.