Emmons

Emmons, B. "The overstruck coinage of Ptolemy I" in MN 6 (1954), pp. 69–83.

Overstrikes prove sequence of different tetradrachm types, demonstrate recall of old coinage.

Emmons

Emmons, B. "The overstruck coinage of Ptolemy I" in ANSMN 6 (1954), pp. 69 - 83.

Overstrikes prove sequence of different tetradrachm types, demonstrate recall of old coinage.