This variety is described as a countermarked SC 15.1 (anchor control in r. field) in Seleucid Coins, but it seems more likely
that it is SC 15.2 (with no field control) countermarked with an anchor to make it equivalent to the (presumably later) SC
15.1.
1992.54.1250http://numismatics.org/collection/1992.54.1250mb_physical,osm,imperiumobjecthttp://numismatics.org/search/id/https://numismatics.org/themes/mantisdisplaypk.eyJ1IjoiYmhpaWJuZXIiLCJhIjoiY2xlZWZqZmJjMGdheDNwcW1qaHM2MWZ4cSJ9.oR2ZyKdE7BYKzQkjiotNSghttp://numismatics.org/search/manifest/1992.54.1250American Numismatic Society