Cartridge without serial?

Okay nowadays it is possible to fake everything, but faking entire cartridges could be pure fantasy.
It could be stolen material and consequently the serial number label is removed if it is not engraved on the same body cartridge.

If a cartridge sold with fake serial number (or without serial number) then you can only guess if this cart passed quality control or not, the history of this cart is unknown. What is easy to do is to make it looks like sealed and never opened before in the box. On my sample the field for serial number in the manual was blank (it was a grey market sample from juki), but my next sample from Mehran (official US importer) was with serial number also printed in the manual and on cartridge body. 

chakster...
Based on your comment I got my ZYX manual out.
At the bottom of page 10 there IS a serial number BUT it`s been scribbled over with a pen, but I can still see the numbers nonetheless.
I would look at the box to see if there`s a number on it too but that`s been in NJ for awhile now :( 

Just checked the manual from my ZYX Premium 4D from Mehran (SoraSound) and there is a serial number field on warranty page with black ink stamp “PD108” and another layer in red “Premium 4D” stamp.

I have another ZYX product (headamp) with same black ink stamp “P1172”, also from SoraSound.


Even my Zyx Live18 headshell comes with serial number (also black ink stamp “S1994” in the manual)

@chakster  Are you suggesting that the manufacturer of a cartridge, who probably is not producing large numbers, will not know if some go missing? Or, that he has no way of knowing which distributor is going through a much larger supply than the others....Plus, is the manufacturer not marking the serial number on each cartridge before supplying to his/her distributor?You think that cartridges are leaving the factory with no serial number attached without their knowledge... I'm having a hard time buying all this....just saying.