I don't care for the gray. As Axel said its too monochromatic. I prefer the silver dial with blue hands and blue moonphase...they add some color and life the design. Ah...Piaget...I knew there was a brand escaping my mind that had made coin watches. I'm glad you came to appreciate the effort your Dad put into finding you the right coin watch. As you stated, they are interesting in that every coin watch is a bit different. The textured surface and coin edging also keeps the watch from easily showing wear such as hairline scratches or scuff marks, which frequently seen on polished gold surfaces. The Piaget coin watch does use an inhouse movement. Piaget makes all of their watch movements and on occasion they supply movements to sister companies such as Cartier. Your Corum coin watch does not use an Audemars Piguet movement, but you are sort of close. It actually uses a Frederic Piguet movement. F. Piguet is a very fine movement maker and has supplied movements to Audemars Piguet for its Royal Oak chronograph, to VC for some of their dress watches and for their Overseas Chronograph, to Cartier for their 38mm Pasha chronograph, and to a few other fine companies. So again you were close. Interesting how Piaget or Corum get around "damaging" US currency as all of their work in turning a coin into a watch is done with a supply of coins that are in Switzerland. Not surprising as I was under the impression the US had taken their own supply gold coins out of circulation back when FDR was in office. Definitely, share a picture of your Corum with us. Its an interesting part of watch history and something we don't often see. Its been several years since I've seen one in person.