Del. Code tit. 10 § 4972
Public notice of the sale of goods and chattels by a sheriff under execution process, and of the day, hour, and place thereof, shall be given by advertisements posted, at least 10 days before the day of sale, in 5, or more, public and suitable places in the county, 2 of which, at least, shall be in the hundred of the defendant's residence, if the defendant resides in the county. One such advertisement shall, 10 days at least before the day of sale, be delivered to the defendant, and 1 to each plaintiff in the execution, and also to each plaintiff in any other execution, or executions, at the time in the hands of the sheriff or shall be left at the usual place of abode of such defendant and plaintiffs respectively, if there be such place of abode within the county. If any plaintiff in any such execution resides out of the county, such advertisement shall be delivered to the attorney of such plaintiff, if there is an attorney of record, and 1 such advertisement shall be transmitted to such plaintiff by mail, being enclosed and addressed to the plaintiff at the post office nearest the plaintiff's place of abode. Advertisement shall also, at least 10 days before the day of sale, be delivered to the defendant's landlord, or the landlord's agent, if there is such residing in the county. This section and § 4971 of this title do not apply to execution process issued by justices of the peace or the Court of Common Pleas.
10 Del. C. § 4972