I like to catalog the differences between coins, using the Presscoins numbering system. I will chronicle my findings here if they are not already on the Presscoins website.
Here, I compare the Nala pennies from the Magic Kingdom using Presscoins.com’s photos. MK0014, retired from the Seven Dwarfs Mine shop, uses squares and parallelograms in the upper left ring pattern. MK0058, from the Zanzibar/Island Supply shop in Adventureland, has a sawtooth pattern with triangles and a gap between.