https://auctions.cngcoins.com/lots/...s-circa-294-275-bc-ar-didrachm-20mm-771-g-12h This type (see my avatar) weighs ~7.8 gm on the Ptolemaic first weight reduction standard used 305-295 BC according to Cathy Lorber in "A revised chronology for the coinage of Ptolemy I" NC 165:45-64 2005. Wolfgang Fischer-Bossert reported 256 die varieties in his article on the series, "The Didrachm Coinage of Magas" in M. Asolati, ed., Le monete di Cirene e della Cirenaica nel Mediterraneo. Problemi e prospettive. Atti del V Congresso Internationale di Numismatica e di Storia Monetaria Padova, 17-19 marzo 2016. However, there are about 20 varieties based on the monograms and/or symbols used. I won a few of the lots as my first acquisitions of 2022. These additions almost complete my goal of having an example of every major variety. One was lot 540, BMC 254a = Pozzi 3285: https://auctions.cngcoins.com/lots/...as-circa-294-275-bc-ar-didrachm-21mm-760-g-7h The Pozzi specimen is the only other example of the variety I know of.