$100 or $1,000,000?
The reuse of postage stamps was an obsession of postal officials in the mid-nineteenth century. It was the reason that cancellations were used on letters. Still, postal officials in most countries thought this was not enough. They imagined a world of people soaking used postage stamps off envelopes, washing the cancellations either with ink eradicator or with boiling water, and reusing the stamps to defraud the post office of revenue. It was a reasonable fear. A 90