Two piece construction - Made in sterling silver. "USN" is in the top bar with "AVIATION REPAIR OVERHAUL UNIT" on the hanging planchet. 1 3/4 inches tall by 1 1/4 inches across in size. Marked on the reverse side "STERLING". Pinback with a roll locking pin catch. Artwork has a six handed mechanic with bug antennae, standing by a radial engine on a stand.