The countermark is described as a small anchor in SC, but close inspection shows that it is an amphora punched sideways over
the anchor. It may perhaps have been applied at Myrina, where the amphora was a common civic badge.
1944.100.78171http://numismatics.org/collection/1944.100.78171mb_physical,osm,imperiumobjecthttp://numismatics.org/search/id/https://numismatics.org/themes/mantisdisplaypk.eyJ1IjoiYmhpaWJuZXIiLCJhIjoiY2xlZWZqZmJjMGdheDNwcW1qaHM2MWZ4cSJ9.oR2ZyKdE7BYKzQkjiotNSghttp://numismatics.org/search/manifest/1944.100.78171American Numismatic Society