Check the listing for details. Monmouth College ROTC Crest DI/DUI CB V21 HM. Condition: Used. Listed at 2.95 USD. Insignia for the United States Army, Monmouth College ROTC. Clutch Back with V21 Hallmark on the back. A must for any serious ROTC crest collector. This crest is in great condition for it's age. Very unique insignia that will stand out in any collection.