looks like one of the oldest patterns for that part (more than 10 years old)
also, its CC BY 2 + 4, so it may need a rework anyways...
for the pattern itself, yes the ering is missing, but could be done completely different upon rework: black ring as prim (and another one as padding), then the ering inside of it (and the center looks symmetric enough to be quartered)
also, its CC BY 2 + 4, so it may need a rework anyways...
for the pattern itself, yes the ering is missing, but could be done completely different upon rework: black ring as prim (and another one as padding), then the ering inside of it (and the center looks symmetric enough to be quartered)