You may find this hard to believe, but it's an OP 2.

It's a nice cartridge, one of those made after Dr. Benz bought Empire.
It originally came with Empire stylus S22E, a.k.a. Pfanstiehl 242-DE. They're a 0.3 x 0.7 mil elliptical that tracks pretty heavily, 2.0 to 4.0 grams. Gary at
tVoM has NOS styli quite reasonably priced and also aftermarket EVG styli (4242-DE) that track considerably lighter, are half the price of the original and, according to reports, sound quite good.
John