This "Milsub" reference 5513 is a very attractive representative of this landmark model, preserved in excellent overall condition. The untouched dial impresses with the highly attractive discoloration of the luminous material to numerals and hands, the different shades of sand-brown rendering the watch a very unique appearance. The case has preserved its full proportions to the best extend, both the reference and serial numbers finely engraved between the lugs are clearly legible and repeated to the inside of the back cover, as the connoisseur would expect. The bezel is the correct version featuring minute markings, unique for the military Submariner series.
The Military version of the Submariner ref. 5513 was adapted following the specifications requested by the British Ministry of Defence. The watches had to be fitted with fixed bar lugs with a diameter of at least 2 mm. The dials had to be easily readable and were therefore equipped with the larger "sword" hands. They also had to show the international symbol for Tritium, the encircled "T". The hack feature allowing the precise setting of the time was another specific request. The models furthermore had a unique bezel with sixty minute marks rather than only the first fifteen minutes. The outside of the case backs were marked with the military broad arrow sign, Ministry of Defence issue numbers and unit number. Furthermore the inside of the case backs repeated the serial number which is commonly only found between the lugs.
The outside of the case back of the present watch is engraved with the following markings:
0552 for British Ministry of Defence, 923-7697 for the NATO code, the Broad Arrow characterizing all watches owned by the British Army, the issue number 421 and issue year 75.