I have heard about various PRC gold overprinted souvenir sheets with additional serial numbers in black. What is the story on these?
Such sheets do exist, but serial numbers were not added by the PRC postal authorities. The promoters of the various stamp stamp shows at which these issues were first sold run them through a machine which adds an additional unique black serial number to each sheet. They then resell these to those who attend the show.
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- My school has combination locks and we have lost the chart booklet that lists all of the serial numbers and their corresponding combinations. How can we obtain a new chart booklet?
- I have heard about various PRC gold overprinted souvenir sheets with additional serial numbers in black. What is the story on these?
