What's the deal with people using really old postage stamps?

It turned out that the stamp was a fake. Fun story though.

As for the $700 for $1000 worth of stamps. I don’t get the confusion here. Either you can have $700 in cash now or $1000 in free postage over the next bunch of years. Sounds like a fair trade.

The stamp turned out to be a fake.

The original news story said that the envelope had been placed into a box that, by law, had to be sealed for 22 months.

So I guess the law isn’t as strong as curiosity and greed?