Diamond-shaped tiles of Tholos ... Piet de Jong ... PD 72 Horizontal (normal) ... ca. 1939
Diamond-shaped tiles of Tholos ... Piet de Jong ... PD 72 AMS Horizontal (normal) ... ca. 1939
Diamond-shaped tile of the Tholos. Drawing by Piet de Jong ... PD 72 Horizontal (normal) ... 1939