There were belt loops that snap on with 6 rounds and dump pouches with 6 rounds sometimes with spaces for two rounds each. These were less noticeable on the belt if your jacket flapped in the wind. These days when I carry a revolver in plainclothes, I use both types and a Speed strip in the right front pocket. I carry a 640 in my front left pocket or in a Buchiemer Clark Sheriff model, which is similar to the Lewis Police Special. I carry a 19 2 1/2 in either a Kramer, a Galco, or an old school Bianchii FBI tilt holster. I went on the job in SoCal in 76. Lewis holsters and Buchiemer Clark were routinely seen on the plainclothes folks.