Need help identifying this MC cartridge? Specs would be great!

This cartridge came to me maybe 15 years ago in a Systemdek XII / profile arm.  I tried it then, thought it was good, but had other priorities.

Just moved, and "found" a lot of my accumulated audio gear.  Just flipping through carts, this one sounded significantly better than the Denon 300 before or the Dynavector 10X4 I rolled in after.  

I had the tracking set at 2G, the cart sounded better on the 30 ohm vs 10 setting on the FRT-3 transformer I grabbed.  Have not experimented with any other settings or head amps.

I would pull it from the shell, but I don't remember any info on top.

Not sure how to insert a pic, so here is a link:

https://www.dropbox.com/s/1h6fem0rcs2lcy0/Unknown%20cart.jpg?dl=0

Would appreciate any insight,

Thanks,

Robert