Primarily Petroliana Shop Talk Forums Shop Talk Petroliana Forums General Petroliana Discussion Pam Clock Help Needed (Kendall)

So I see these on ebay quite often. This one is on Proxi. Did they really make this many of these things? Is there any definitive way to tell if the face is authentic?
This one for example, although said to be "PAM" in the listing, does not say Pam along the bottom like some I've seen.
Just wondering what the experts can teach me about these.