MIL-W-46374

Hamilton 46374 specification watches were issued with the publication of MIL-W-46374A specification at 10 September 1968 which asked for Stainless Steel cased watches. The MIL-W-46374 specification was maintained and updated with every MIL-W-46374 specification published. Which last approximately 20 years.

MIL-W-46374B, published 7 May 1975 amended the specification with a further requirement for the H3 and radiation symbol on the dial. B specification watches were the first that required a thin film of durable protective clear coating on the hand. In addition, it was the first that required "Dispose Rad. Waste" to be engraved on the caseback. The watch strap which was specified as a Type II MIL-S-46383B has to be in Olive Drab (Khaki green). As with all other MIL-W-46374 specification watches, the strap bars were required to be fixed.

Spring bars are specifically excluded.

MIL-W-46374D, published 10 October 1986 was a major turning point of the specification. The D specification created five "Types" of watches. Type 1 being specified as a more expensive and more accurate variant.

The D specification asked for straps bar which should be able to withstand a static pull on the strap of up to 15pounds each. Straps must be MIL-S-46383B, either in Black or OD.

GG-W-113

Hamilton GG-W-113 was first issued in June 1969. They are specified as maintainable and accuracy to be of importance. Reliable ETA movements were used for the above mentioned reasons.

The GG-W-113 was classified as a navigator watch issued only to Pilots. The exclusion of the H3 and radiation symbol means less crowded dial to enable easier reading. Hamilton kept the GG-W-113 in production until 1988 when it was superseded by the MIL-W-46374D specification.