Quoted from RobOOZE:
I haven't looked at the manual. It's still stapled to the cabinet. I have to call stern tomorrow to get my Primus manual. I work for a stern dealer and have a good relationship with Stern and don't want to jeopardize it. I'll ask Stern tomorrow if I can put it out. They are probably say No, but I'll ask.
Don't overthink this. Just realize you are simply a pawn in Stern's "cat & munsters ... err, cat & mouse" reveal of their upcoming pin.
It was no "accident" you were given that package. Now, do your duty, and reveal it, as they intended.
... or maybe, not.