I've lost track as I've been comparing the 2 coins, but I have noted easily more than half a dozen differences.
They range from the placement of the + and some of the colons, the positioning of certain letters, and the alignment of the upper hair ribbon in relation to the N in OMN, as well as the the alignment of the rear of the bust as noted by Nick in the preceding post.
The only item I haven't checked and compared as I'm on my cell phone and haven't had an opportunity to print out the images, is to count the border teeth.