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N | O | P | Q | R |
S | T | U |
V | W | X | Y | Z
Costs more than the price of postage. The extra money is donated
to a charity or special fund.
All the variations of design and value of a particular issue.
Unit of stamps often with a common theme, usually commemorative,
Stamps of different designs, colours, or values printed
side by side in the same pane.
Small sheet of stamps with a commemorative inscription.
Three or more unseparated stamps in a row.