I googled a bit, only found the notecards that you most likely already know about since they come up first on the google list, but didn't find anything promising, first attempts.

Here's the url of the print so others can see it:

http://store1.yimg.com/I/pomegranate_1811_42542453

If you can't find a fine quality print, any chance that you could take one of these notecards and have a professional print maker/copier enlarge it on a high quality art paper?