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proof
Sat Apr 08 2000 at 1:03:26
(verb) To require state-issued identification documents from a customer, verifying age, before selling alcohol, tobacco, porn, or other adult-market goods and services to them. q.v.
Tue Apr 03 2001 at 0:22:55
Specially minted coin, that receives multiple blows from polished dies in order to make details of the coins sharper. Current US Proofs have frosted devices and polished fields. Before the ‘70s only the first few coins from each die had frosted devices, as a result early cameo proofs command a premium. Because the coins are not annealed between strikes the dies wear out quickly.
Die Life Reported by U.S. Mint 1971