Arrived yesterday, this one is 64R5, one of several positions with an "E" curl, in the E in POSTAGE. I didn't see the curl in the image when I bought this on BidStart for $11.50, but was pretty sure it was a Plate 5, Relief C or D.
The "E" curl started on 65R5 and shows on at least 65R-24R-64R-23R-63R-22R-62R-21R-61R-30L-70L-29L. (From Richard Doporto's site, The 1 cent Franklin Plating Archive, one of the greatest websites in all of philately). All of these positions are "C" Relief, either the 3rd or 7th row of the plate.
For those who want to look, this is a high res scan, and the marks that ID this as 64R5, besides the E curl, are the vertical dashes on top of one another in the left margin at the top to the left of Ornaments A/B, which is shaped like a large "3" or a backwards "E". Very visible on this, even to the naked eye.

Enjoy, Ray