This is my favourite stamp to add to the back of all my cards at the moment. I got it from I brake for Stamps (http://www.ibrakeforstamps.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=3108&Category_Code=PHARHP) and Della the site owner is a really lovely and helpful lady.
It came all the way from America and I received it within 2 days of placing my order (better then from a lot of local online craft shops) with a lovely freeby and excellent aftersales services.
Thanks to Della and her team.
Go have a look at the rest of the stamps, they are the best stamps I have bought recently.