In the early to mid 1970s, Lemania produced this specific timepiece for the Swedish Air Force as well as the the South African Air Force. There are very few examples of this specific timepieces available as between the years of 1971-1976 approximately 630 examples of this specific reference were ever produced based on our extensive research. Half of the watches produced were issued to the Swedish Air Force, and the other half to the South African Air Force. This model came in two different dial patterns and bezel patterns. The earlier examples had fine and small font used for the numbers except for the 12 and 6 on the dial, and also had lume dots outside of each number around the dial, the earlier version of the dial also possessed a broad arrow just above the 6 o'clock position with a circled T just below the 12 o'clock position denoting the use of Tritium lume on the dial, also present was SWISS MADE which was placed on the dial under the outside of the minute track at the 6 o'clock position. The tritium lume was only used on the lume dots next to each number but fully filled the 12 o'clock and 6 o'clock numbers only.The later dial variant had a bold font and did not have the broad arrow above the 6 o'clock position on the dial. The numbers are much larger and the sub dials at the 3 o'clock and 9 o'clock positions "cover" the 3 and 9 so that they are only partially visible. The large numbers on the dial are fully lumed and the minute track has been updated to show the minutes at all marked positions increasing the functionality of the watch when using the chronograph function. The earlier versions were far more sterile in look and in over all design and did not possess the gauge like look and feel like the later model such as the one we have featured here at Craft and Tailored. The later dial variant also denotes the use of tritium lume at 6 o'clock position outside the minute track with T SWISS MADE TThe main difference between the Swedish (SWAF) and the South African Variants (SAAF) is the rotating bezel the SWAF version had a bakelite type bezel similar to what would be found on early Omega Seamaster references, And the SAAF version had an anodized aluminum bezel as seen in the pictures below