Ex Brian Bolton Collection and previously Noble Numismatics Sale 86, lot 3291. Ex Paul Rynearson February 2003 with his ticket and previously from Professor S. Pozzi Collection, Naville & Co sale I, 4th April 1921, (lot 1441). With tickets. Robert Hepworth "The 4th Century B.C. Magistrate Coinage of the Boiotian Confederacy pp.61-89 (Numismatic Chronicle, Hellenic Numismatic Society, 1998) describes the series as having 97 different reverse varieties noted from 1700 examples recorded from all the sources. The series is divided into four major groups with sub-division within. It is established by die-links and hoard evidence of the approximate order of issue. The series appears to be have an annual change of magistrates. This variety is noted by Hepworth as part of Group BI, No.58 in table and a rarity of 51+ known examples.