Anemone ID please

Picked this guy up at the LFS as a GBTA. When I got it it was distressed so I didn’t get a good look at it.Now that it’s not shriveled up its doesn’t remind me of a GBTA so much, actually I was sceptical at the store.  It’s foot is brown, I don’t remember GBTA’s having a brown/reddish  base?View attachment 3141
Can you get a good picture of it's oral disc? If it has white marks by it's mouth it would be an BTA or an LTA typically.