A British Army Guardsman who stole his best friend's Armani watch was caught when the troop's girlfriend played detective and found him trying to sell it on Gumtree.
Guardsman Callum O'Donovan-Cronin returned from guard duty to find his prized possession gone and reported the £350 timepiece missing, a military court heard.
Having spotted an identical watch posted online, he and his girlfriend hatched a plan to catch out the seller.
