The 7922, being the earliest submariner of the Tudor family is definitely one of the rarest breed of all big crowns. Introduced at the same time as its big brother Rolex 6538 in 1956; side by side, both 7922 & 6538 cases are identical.
The first production (mid 1950's) 7922 sports a 8mm Brevet "+" big crown and were made for only a very short period of time. At the late 50's, Tudor changed them to the thinner case with a 6mm "small crown" and its Big Crown reference also changed to 7924 around 1958.
This 7922 feature a Cal.390 automatic movement, 17 jewels, Tudor Auto-Prince rotor, black gilt printed SWISS dial and gilt mercedes hands set with rare big bubble second hand.
Case reference "BREVET + 7922", case no. 14xxxx, both numbers sharp and easily readable. Caseback signed Montes Tudor S.A. IV1958
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Introduced in 1958 as part of their "Professional" line of watches, the vast majority Seamaster 300 were produced for the public market. From 1967 until approximately 1970, a very small batch was ordered by the British Royal Navy for military use with a number of special features set them apart from the regular production units.
The cases were delivered with fixed spring bars and dials featured a circle T, signifying the use of tritium for the dial and the hands. The crown was screw down as opposed to the snap down ones found on production versions. Casebacks were engraved by the British MOD with their own branch codes, unique issue number (each) and year of issue.
This military SM300 is a rare survivor and completely original down to the crazed plexi found from the original owner.
Watch is accompanied by an Extract from the Archives confirming date of production and delivered to the British Royal Navy