The deposit notebook lists S 1439 here, but the following information on that card indicates that D 18:4 could be considered with D 18:3 and not as a separate deposit.
"Excavation of pit, which partly ... See also XVIII, nb. pp. 3583-3584 and container B 603. T 604 for other fragments possibly of bronze workers molds from street to north of Poros Building. 4th. century context; XV, nb.p. 2866, for mold fragments from southwest room stored in T 732."