Ibanez S-Series backplate Cover

This is a backplate cover for a 1990s Ibanez S-series electric guitar. It has been successfully installed on such a guitar, however it may fit both other Ibanez S-series guitars sharing the same screw hole positions and dimensions, and other Ibanez guitars in general. 

I am providing a STEP file for you to adapt it to your liking, if it doesn't fit your guitar.