TITLE 18 of the US Code is the Criminal section. Chapter 17 covers coins and currency Chapter 25 covers counterfeiting The Congress of the United States provides this http://uscode.house.gov/ wherein you will find this http://uscode.house.gov/download/pls/18C17.txt and this http://uscode.house.gov/download/pls/18C25.txt 18 USC Sec. 485 01/08/2008 TITLE 18 - CRIMES AND CRIMINAL PROCEDURE PART I - CRIMES CHAPTER 25 - COUNTERFEITING AND FORGERY Sec. 485. Coins or bars Whoever falsely makes, forges, or counterfeits any coin or bar in resemblance or similitude of any coin of a denomination higher than 5 cents or any gold or silver bar coined or stamped at any mint or assay office of the United States, or in resemblance or similitude of any foreign gold or silver coin current in the United States or in actual use and circulation as money within the United States; or Whoever passes, utters, publishes, sells, possesses, or brings into the United States any false, forged, or counterfeit coin or bar, knowing the same to be false, forged, or counterfeit, with intent to defraud any body politic or corporate, or any person, or attempts the commission of any offense described in this paragraph - Shall be fined under this title or imprisoned not more than fifteen years, or both. -SOURCE- (June 25, 1948, ch. 645, 62 Stat. 708; Pub. L. 89-81, title II, Sec. 211(a), July 23, 1965, 79 Stat. 257; Pub. L. 103-322, title XXXIII, Sec. 330016(1)(K), Sept. 13, 1994, 108 Stat. 2147.) -MISC1- HISTORICAL AND REVISION NOTES Based on title 18, U.S.C., 1940 ed., Sec. 277 (Mar. 4, 1909, ch. 321, Sec. 163, 35 Stat. 1119). Reference to persons causing, procuring, aiding or assisting was omitted as unnecessary as such persons are made principals by section 2 of this title. Mandatory punishment provision was rephrased in the alternative. The provision for imprisonment for 10 years was changed to 15 years to conform to sections 471 and 472 of this title. Changes were made in phraseology. AMENDMENTS 1994 - Pub. L. 103-322 substituted "fined under this title" for "fined not more than $5,000". 1965 - Pub. L. 89-81 struck out "Gold or silver" before "Coins or bars" in section catchline, changed the description of the United States coins covered in first par. from gold or silver coins to any coin of a denomination higher than 5 cents, and made minor structural changes in second par. -End-
It has been thought of before ... Read 18 USC 17 and 18 USC 25 and you will see that everything is covered. The section cited above limits coins worth more than 5 cents. Other sections cover coins worth less than 5 cents. The section cited covers US coins. Other sections cover everything else you can imagine, including foreign bus tokens.