Under the 50 year rule, all WWI M1911s and WWII M1911A1s are C&R, as well as Argentine Sistema Colts, Colts sold to Argentina, Argentine Ballester Molina/Ballester Rigaud pistols, and Norwegian Model 1914s. Colt Government Model (commercial) guns made before 1961 are also C&R. All S&W and Colt M1917 revolvers and many later revolvers made up to 1960 are also in C&R status. (I don't think the Ruger convertibles are there yet, but they will be in a couple of years.)
Jim