If any officer, agent or trustee shall accept any gift, offer or promise, prohibited by Section 97-11-11, he shall, on conviction, be forever disqualified from holding any public office, trust or appointment, and shall forfeit his office, if any be held, and be imprisoned in the penitentiary not more than ten (10) years, or be fined not more than Five Thousand Dollars ($5,000.00), or both.