How scammers are selling counterfeit stamps on Facebook ads

"The U.S. Postal Service has teams of forensic scientists who can catch the subtle differences between a real postage stamp and a fake one, however, an average person could easily make that mistake and use a counterfeit stamp, which is a federal crime.

Other legitimate retailers such as Costco, Walgreens, and CVS are permitted to sell postage stamps at a discount by law, so it is possible to