Section 20. Whoever casts, stamps, engraves, makes or mends, or knowingly has in his possession a mould, pattern, die, puncheon, engine, press or other tool or instrument, adapted to and designed for coining or making counterfeit coin, in the similitude of any gold or silver coin current by law or usage in the commonwealth, with intent to use or employ the same or to cause or permit the same to be used or employed in coining or making any such false and counterfeit coin as aforesaid, shall be punished by imprisonment in the state prison for not more than ten years or by a fine of not more than one thousand dollars and imprisonment in jail for not more than two years.