Final answer:
Up to three sets of the Medal of Honor can be provided for display purposes, engraved with 'FOR DISPLAY ONLY,' upon approval by the CNO or CMC.
Step-by-step explanation:
The question pertains to the regulation regarding the procurement and display of military medals, specifically, the Medal of Honor. Per the regulation, upon approval by the Chief of Naval Operations (CNO) or the Commandant of the Marine Corps (CMC), three sets of the Medal of Honor may be furnished on a no-cost basis for display purposes. These medals will be distinctly marked with the engraving 'FOR DISPLAY ONLY' to signify that they are not the actual medals awarded to the recipients but replicas for the purpose of public display.