This is a Vintage 22 Piece 1/2" Drive Socket Set the manufacturers include SK, Thorson, Bonney, Giller and New Britain. This set is from the military all pieces are american made. The ratchet is a Thorsen 77 the short breaker bar is a Thorsen 15. The swivel is a proto Los Angeles 5470. The sockets are all 12pt from mixed manufacturers. The 10" extension is bent. The case is a Giller Tool Corp Dallas Texas. The tools are all rust free and have no grind marks as far as we can tell there are no engravings but there is a lot of old grease on the tools so there might be some under the grease. There was no rust on any of the tools so we just left the grease alone. The exterior of the case does have some surface rust.