This is a reproduction based on photos and some guesses. The size is based on the dimenions of the morpher coins by Charles Roland on MyMiniFactory (link below). It features a built in disc in the middle. But no way of attaching to a costume (yet?). It was fun modelling, and it looks and feels better than the photos let on.

I printed the stickers on photo paper based on the recesses. They ended up a wee bit too big and needed trimming. I've posted the Illustrator file but haven't fixed it. My printer isn't quite detailed enough to print the medallions or terribly fine lettering.

https://www.myminifactory.com/object/blank-93-power-morpher-coin-41654