ZEN cartridge ?

I have a "ZEN" (that''s the name in the front with gold letters) cartridge and can't find any information about it. In the back has a numbe rthat looks like is the serial: EQ41 or E041 in white letters that seems to be writen aat hand. Has black body, gold stylus cover and is gold and varnished wood top. Would like to find some info about it.... can you help me?
thanks in advance