I called PF yesterday and they said that that # wasn't be in their digital database. The person I spoke with said they'd check the paper files they have.
PF has some more recent certs that I thought look reasonable and similar to what I have. Also, I have the digital Klaseboer catalog/database (very good BTW) that shows both genuine and forgeries of this stamp. The forgeries shown on his site are pretty crude. Below are the images of the PF and Klaseboer genuine stamps.
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If I hear back from PF I'll report back.