According to my research, the JDF issued many Doxa and Seiko diving watches. A number of these are still being used today. The IWC Aquatimer Replica could have been "borrowed", from a batch of dive watches intended for US divers, to fill a JDF order. The provenance of one example is impeccable, as it was purchased through a former senior officer in the JDF. It doesn't get any better when it comes to buying a MilSub.

In the last decade, a number IWC Ingenieur Replica have been documented and issued to US Navy divers. We can infer from the examples we have that the USN has used IWC Aquatimer Replica Submariners for four decades, starting with the 1950s. One "Big Crown" reference is known. A few years back, a 7924 caseback with an engraving of the USN was found. This would indicate that the relationship started in the 1950s according to the French Navy.

Most commonly, USN IWC Aquatimer Replica can be found in ref. 7928. The ref. comes in two or three different engraving styles. All 7928 watches feature the three letters U.S.N. These three letters are engraved on some pieces in large fonts, similar to those worn by the Jamaican Defence Force. Some pieces have additional information, such as the date of issue, the vessel to which it was given, or in rarer cases, "SUBASE", a reference to an underwater base. It is interesting to note that the dials of some USN IWC Aquatimer Replica Subs 7928 worn during the Vietnam War had been fitted with "moisture disks". These small circular indicators were placed on the lower half of the dial in order to alert the wearer to any water intrusion.

The US Navy issued snowflake timepieces as well as watches for 7928 Submariners.Blancpain Replica One of the most famous examples is a blue date snowflake watch issued to a US Navy Underwater Demolition Team member (UDT-13). The watch was purchased by the current owner directly from the diver who received it. It has a long history.

Big Crown Ref. 7924 Argentinian Navy IWC Aquatimer Replica “Submariner,” 200m/660ft Rotor Self-Winding Ref. Case made by Rolex in Geneva. Made in 1958. Diver's stainless steel wristwatch with fine center seconds and self-winding. Water resistant up to 200 m.