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About this video:

Ever since postage stamps first appeared, there have been forgeries with the intent of defrauding postal authorities and stamp collectors.  Doctoring of stamps, on the other hand, is aimed solely at the philatelist.  This is usually done to hide flaws and repairs on premium stamps or to produce fake varieties.  This program discusses some of the methods used to doctor stamps.

Video Duration:  25 minutes and 58 seconds