Hi Everyone, I have been offered this Breitling model for trade for an Omega 1953 Full set bumper I’m trying to sell... Never heard or seen this breitling before ... it’s quartz, and was apparently give to breitling clients when their watches were in for service ... hence “courtesy watch”. Apparently was never available for sale hence engraving on caseback. Is this legit? Can’t find much online. photos for reference including my watch for sale- thanks !!!