Identifing a Koetsu cartridge.
I have two Koetsu cartridges that came with a system I bought. They are around 20-25 years old. The box of one is penciled Rosewood Signature #13275 and the other is also rosewood, but has SCWA #015 penciled on the box. The distinguishing feature is that the screw slot is angled like the tiger eye. Anyone have any idea what model it is?