[TheSpiceIsLife]

Or, it demonstrates a lack of foresight by NASA to take advantage of an opportunity to sell a bunch of stamps over the following decades at wildly inflated prices.

There must be at least a handful of items that don't weight a lot per 1000 units that could have gone to the moon and back. I'm thinking pretty much any paper document or certificate, cash notes.

[dr_dshiv]

That's how Hearst funded the first round-the-world flight, on the Grad Zeppelin. Novelty stamps!

But mixed motivations can be confusing and demotivating.