Drawing of goblet ... Ptg. 65 AMS Horizontal (normal)
Characteristic signature of Piet de Jong from the watercolors in the Athenian Agora, type 1 ... Craig Mauzy ... Ptg. 65 Horizontal (normal) ... 2006
Skyphos of the Protogeometric period. Watercolor by Piet de Jong ... Craig Mauzy ... Ptg. 65 Horizontal (normal) ... 2006
