The EFO Collector
Buyers & Sellers of EFO Material
18. Missing overprints/Bureau precancels: The same problem can result in missing overprints and precancels as the overprinting mat shifted up or down. They should be collected in pairs so it can be seen just what is missing. The condition also can occur when presses run out of ink. The overprint color is missing, although the impression of the plate may be present. These can be worth hundreds of dollars and more.
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