Whoever shall falsely make, issue, alter, forge, or counterfeit, or cause or procure to be falsely made, issued, altered, forged, or counterfeited, or willingly aid, cause, procure or assist in, or be a party to the false making, issuing, altering, forging, or counterfeiting of any certificate of inspection issued under authority of this chapter, sections
491,
493 to
497 of this title, or any Act making appropriations for the Department of Agriculture; or shall utter or publish as true or cause to be uttered or published as true any such false, forged, altered, or counterfeited certificate, for a fraudulent purpose, shall be guilty of a misdemeanor and upon conviction shall be punished by a fine of not more than $500 or by imprisonment for a period of not more than one year, or both, at the discretion of the court.