Hopalong Cassidy gun and holster pin. Hopalong Cassidy is a cowboy character created by author Clarence Mulford in 1904. Cassidy films were made during the 1930's and later TV and Radio series were produced in the 1940's and early 1950's. This pin is memorabilia from the 1950's TV Western show. The holster has the initials H C. The pistol is on a chain and sits in the holster when worn. The pin measures 1 and 1/2 inches tall when the pistol is holstered.