This pin is Remy on the right and Emile eating a piece of cheese on the left side of a chef hat from Gusteau’s the restaurant in the Disney/Pixar movie Ratatouille. The background of the pin is dark green with Ratatouille in a light yellow/green on the bottom.
The top half of the back has a crown pattern with a single post and two nubs. The bottom half has Pixar and under that is ©Disney/Pixar. Under the copyright information is Made in China and finally the FAC number below.