Four seems to have been a significant number in the designation of machines we love to model. Whether the US Navy F4s (F4B, F4F, F4U, F4D, F4H, etc.), the US Air Force versions (P-40, P-47, P-400, F-84, F-94, F-104, F-4, etc.) and lots of other militaries as well (Bf 109E-4, Fw 190A-4, Mosquito B.IV, Hurricane Mk. IV, etc.). Armor makes it into the mix as well (M4, M47, M48, Panzer IV, T-34, etc.) and civilian (747, etc.) A Sign of the Four Campaign will be varied and interesting, so long as every subject has a 4 in the official designation, it’s eligible. Elementary!
We're running a Sign of the Four campaign over on AeroScale and would love for you armor types to jump in as well if you're interested. You can look at the thread and add your 2 cents worth
here. The rules and sign-up page is
here. Come on over and check it out!
Michael