Exhaustion postage stamp second overprint: postage stamp with seldom needed face value second overprinted for exhaustion with often needed face value |
Occupation postage stamp second overprint: postage stamp second overprinted after a military occupation |
Validation extension postage stamp second overprint: postage stamp second overprinted to extend the validation (e.g. Ottoman Empire 1915 - 1916) |
Category change postage stamp sec-ond overprint: postage stamp second over-printed to change the stamp category (e.g. definitive postage stamp -> official postage stamp) |
Face value postage stamp second overprint: postage stamp second over-printed with a new face value |