Info and Cart for Panta Sound Symbol RPH-340

Good Morning,
I just purchased a Panta Sound Symbol RPH-340 Turntable.
It�s currently fitted with a R47XT (Shure M75EJ) cartridge.
Wanted to go with a more modern cartridge.
Was thinking of possibly a Grado Black.
Does anyone have specs on the old Shure or a recommendation for a cartridge.

Anyone have any detailed information on the Panta Table or know where I could find a manual?