A book of forever stamps

Twenty specimens to a booklet, the printed design fixed while the value beneath it floats, pegged not to a number but to whatever first class postage happens to cost on the day the stamp is used. This is the entire innovation: a promise rather than a price. Introduced to spare customers the indignity of a drawer full of one cent stamps bought to cover a rate increase, the forever stamp has instead created a new kind of hoarding, quieter and more respectable, in which a booklet bought in a year of low postage is spent, one at a time, across a decade of higher ones. The adhesive has improved twice since the design settled on a small flag, rendered at a scale too modest to wave. Collectors distinguish printings by the width of the stripes and the shade of the blue, distinctions invisible to anyone licking an envelope shut. Sold at pharmacy counters, grocery stores, occasionally out of a vending machine that also dispenses stamps of a commemorative artist nobody asked for, the book travels folded in a wallet longer than most of its owners intend, waiting for an occasion, a birthday card, a check that still has to be mailed for reasons nobody quite defends anymore. It does not expire. It does not need to. Its value updates itself, invisibly, the way a coin does not, which is either a small mercy or a quiet lesson in the difference between a price and a promise.

H. G. Plimsoll