Fujica X body cap (Fujica AX and STX cameras)

A body cap for Fujica X Mount that was used on Fujica AX, STX and Porst CR and some other cameras (late 1970-1985).

There is a small recess to add paint/marking.

The grippy part does not need support, the top one does. 
Illustration:
 

Source:
https://cad.onshape.com/documents/b8044b5d1302cb493d9cff62/w/57e18ffc7e6ff87d19359325/e/068f2999d66a839ac7dbf1ea?renderMode=0&uiState=66745e0005211f75e1620153