From the depths of my USA postal history collection, I bring to light a couple covers to share with the club. They both have "OCR" in a circle with bars to obliterate an incorrect barcode at the bottom of the cover. OCR is the acronym for Optical Character Recognition, or Optical Character Reader.
The first cover was mailed 30-July-1993 from Cedar Rapids, Iowa to Des Moines, Iowa, but due to an incorrect barcode it ended up in Fort Dodge, Iowa where it was cancelled 2-August-1993 on the reverse. I think the OCR Barcode Obliterator marking was applied in Fort Dodge. What do you think?
The second cover has a similar, but different style obliterator. It was mailed 5-August-1993 from St. Paul, Minnesota to Des Moines, Iowa and routed to an unknown post office where the OCR Barcode Obliterator marking was applied. The reverse has a partial postmark, but the city is off the edge.
Does anyone else happen to have other examples of these OCR-in-circle-with-bars markings on cover? Do you have a Linn's article or further info on them?