MYSTERY DYNAVECTOR KARAT 23R

I got this MC a few years ago, NOS, and just mounted it. I can't really identify it.

•   It doesn't have a badge on the side saying "KARAT 23R" like all the pics on Vinyl Engine.
•   It has a small badge on one side, only saying "Dynavector".
•   But "KARAT 23R" was written by hand on the box.
•   VE says it has a Diamond cantilever but it's clearly Ruby-red, and has the triangular cross-section.
•   VE says it has a "super elliptical" stylus, but under a 30X scope it looks VERY thin and has parallel sides. It looks almost identical, at 30X, to the Shure Micro-Ridge on my V15-V. 

Can anyone tell me what I have?  

Also, I got a Dyna 20B Type 2 High-Output MC at the same time, also NOS. Any opinions on it? I've only heard a couple of Hi-Output MCs I like... but haven't tried many. Nor this one yet.