1974 Hamilton Geneve 6bb/5238290 1266/74 Mechanical British Royal Airforce Issue Wristwatch with Hacking SecondsThis Watch This particular Hamilton Genve is a Royal Air Force issued '6bb' from 1974; the Genve marked dial is one of approximately only 700 issued in that year. Hamilton replaced the outgoing Smiths watches, which were produced from 1973 until 1976. Its 36mm brushed stainless steel tonneau shaped case sits on the wrist like a cushion. The monocoque case means you have to go through the front to get to the movement. It is made from a single block of