Coin type "Svoronos 90" as defined in the publication Svoronos, Joannes N. Ta nomismata tou kratous ton Ptolemaion. Athens,
1904-1908.
Derived label is "Nikoles and Ptolemy, struck on the island of Kos, after 308 B.C., AR coinage.", though this may not reflect
latest opinion on this type.