Since the introduction of perforated stamps, it was the custom to make a sheet of 50 or 100 stamps, who where send to the ministery of railroad, post and telegraphie. These stamps where not ment to be sold to the public, and none of them where even sold in a post-office.They were ment as a gift by the minister to official persons, who received one example each; But it happened that some of these stamps were given to colllectors,who sold the stamps.

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