If you have a PSA Essentials "Peel & Stick" stamp, you can interchange any of these collections!
This example shows Custom Wallace stamp with center exchanged using designs shown below.
If you already own a PSA Essentials stamp, check to make sure it is the newer "Peel & Stick" stamp in order to use interchangeable designs. Look for the "Peel & Stick" logo on the back of the stamp body.