Is there any way to undo an anvil on an item?

Just curious, I kinda' want to get the original appearance of something back, and I can't get my hands on another one.

anvil the orginal (if u still got it) on something else then anvil that onto what u want if thats possible f3

as TY said, gotta find the original or an item that has been anviled to look like the original, and use that to re-anvil your item or do an anvil chain