Balog, Paul. The Fatimid Glass Jeton.Naples, 1974-75 115, Rogers, Edward Thomas. "Glass, As a Material for Standard Coin Weights," NC N.S. 13 (1873).,p.63, no.5
Rogers, Edward Thomas. "Glass, As a Material for Standard Coin Weights," NC N.S. 13 (1873)., p.64, no.6, like GJ 159, but ( ) missing from top and bottom
Balog, Paul. The Fatimid Glass Jeton.Naples, 1974-75 68, Rogers, Edward Thomas. "Glass, As a Material for Standard Coin Weights," NC N.S. 13 (1873)., p.64, no.14
Rogers, Edward Thomas. "Glass, As a Material for Standard Coin Weights," NC N.S. 13 (1873). ,p.65, no.15, like Balog, Paul. The Fatimid Glass Jeton.Naples, 1974-75 74, but no pellet