Sometimes publishers send you things. Usually books. But my publishers sent me this cool 'challenge' coin for Christmas. As the text explains, challenge coins have been given as tokens of 'valor, service and camaraderie' since Roman times. Legionaires who'd proved themsevles particularly stabby on the battlefield got an exta coin in their pay pouch at the end of the week.
Apparently some military units still gift their members with special one-off coins, and the soldier who cannot produce their coin when challenged is up for an expensive round of drinks.
Del Rey's heavy coin of solid black Adamantium was minted solely for Del Rey's authors and the letter professes that it is given as emblem of the comradeship of the house and in appreciation for our work.
But just quietly, to get one you have to straight up murder at least two authors from Baen Books first.