What is "smackers"

Usage examples of "smackers".

Next day Daisy cashed the Micro check for ten hundred aluminum-bronze pseudo-silver smackers, which she hid in a broken radionic coffee urn.

Run by Ward McKey, a fughead if there ever was one, and based in the Laguna Sector of Greater Los Angeles in the state of SoCal, BotPets grosses just shy of a billion smackers per year.