Marathon General Purpose Mechanical. MIL-PRF-46374G. 34mm. Dual wind, New in box

  

I got this brand new in December 2020 direct from Marathon, part of my collection, unused, new in box. I tested the accuracy, and the watch looks to have gained 7 seconds after 20 hours, when compared to a quartz watch. Casing measures approximately 34 mm wide, without measuring the crown.