A certain seller or sellers has been offering fake government postcards for years. I was sent a group of them over ten years ago and was asked my opinion, so I got to see them firsthand. They ALL had a few things in common. The GPC's were pristine with sharp corners. None were inscribed. The signatures were very cleverly done. Ink was always too bold. None were postmarked as having been sent through the mail. Most important of all they were ALL blue-chip signatures never a single common or marginally valued name in the group. Since then, I've seen them turn up here and there occasionally so there are likely still plenty of them out there.
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Always BUYING Vintage Autographs
jim@stinsonsports.com