Another detail to consider when examining your dial: on the Yachtmans I have, and in the ones posted here, there is a border around the day-date window. Unlike a lot of the 6139 models, this border is not a separate metal piece but rather a painted border. It is pretty subtle as the border is black like dial, the difference being the border paint is glossy/shiny while the dial paint is matte. I don't see this border in your picture.