I thought my mug collection was complete with one from each of the four ships I sailed on... but, no... This is a direct result of being a member of this site. Since I joined TWS I have learned all kinds of things about stuff I didn't know about in a navy I was once in. It's been a pleasure... and in the process I acquired these handleless, watch/hand warmer mugs. Each one is by different manufacturer. Thanks LCDR Spratt for the inspiration.