Wearing my new SM300 165.014-63 on a NATO that I had lying around. Not a terrible match, but I may hunt down a vintage 19mm Tropic Star.
They sure don’t make ‘em like they used to!! - 1960's Universal Geneve Uni-Compax "Big Eye" Ref. 884100/02 - cal.125 & Universal Geneve Polerouter Sub, Ref. 869120 - cal. 1-69 along with a 1963 Chevy Nova SS vert
Here's a Sept '61 Seikomatic "Blue Wave" - only made for around a year, and disctinctive due to the spiral pattern on the dial