Rogers, Edward Thomas. "Glass, As a Material for Standard Coin Weights," NC N.S. 13 (1873)., p.64, no. 9, Balog, Paul. The Fatimid Glass Jeton.Naples, 1974-75 145
Balog, Paul. The Fatimid Glass Jeton.Naples, 1974-75 145, Rogers, Edward Thomas. "Glass, As a Material for Standard Coin Weights," NC N.S. 13 (1873)., p.64, no.11
Balog, Paul. The Fatimid Glass Jeton.Naples, 1974-75 147, Rogers, Edward Thomas. "Glass, As a Material for Standard Coin Weights," NC N.S. 13 (1873)., p.64, no.10