 
 <prompt> Wetin be di kain money wey vending machines dey use to give change? Based on di question wey dey above, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: Early releases of the Washington coin include error coins wey dem ship mostly from the Philadelphia mint go Florida and Tennessee banks. Dem dey highly sought after by collectors, and dey trade for as much as $850 each within one week of discovery. The error coins dey identified by the absence of the edge impressions "E PLURIBUS UNUM IN GOD WE TRUST 2007 P". The mint wey dem come from na mostly Philadelphia, although identifying the source mint dey impossible without opening a mint pack wey also get marked units. Edge lettering dey minted for both orientations with respect to "heads", some amateur collectors bin dey initially deceive into buying "upside down lettering error" coins. Some people wey dey doubt dey talk say the Federal Reserve dey make more profit from dollar bills pass dollar coins because the bills dey wear out for few years, whereas coins dey more permanent. The fallacy of this argument dey because new notes wey dem print to replace worn out notes, wey dem don withdraw from circulation, no dey bring in any net revenue to the government to offset the costs of printing new notes and destroying the old ones. As most vending machines no fit give change for banknotes, dem dey commonly accept only $1 bills, though some fit give change in dollar coins. 