The ostracon ND.6231 described in this article was found at Nimrud (Kalḫu), in April 1957, during the excavation of the building known as Fort Shalmaneser which was a royal depot situated in the S.E. corner of the outer town. This sherd came from room F.S., S.W.1, and lay in rubbish mixed with ash, 20 cm. above a trodden level that represents the latest occupation of the Assyrian building which was destroyed in 612 B.C. It is hoped to publish the plan of this depot, in which many wine jars, metal objects and ivories were found, in a subsequent number of Iraq.