This looks to me to be Rouge Garrance Epsom. Lovely colour!
Thanks ms piggy! I didn't think it was "orange" enough for Vermillion but asked anyway as the Vermillion one is easier to get hold of (it's on the UK website), and I would have to ask my SA to do a search for any other red. I think it would be good for receipts. I wanted a Divers envelope (I think that's what it's called) but I don't think she's heard of it so I may get another Calvi, especially after seeing this beauty!