Design: The spindle hole is of a standard size, but a wide area around it is still left open (so that an enlarged hole might still be drilled through?).
History: At first produced by Leeds & Catlin, Diamond Records were later pressed by Columbia. Diamond was one of several minor-league products allowed to exist by Victor/Columbia (as with the Aretino Record, right, and the Harmony Disc Record), whose records could only be played on machines with a non-standard spindle-hole. It was also stipulated that the artists remain anonymous so that Columbia's own releases (which named the performers) would retain a sales advantage. Label scan courtesy of musicologist and collector Bill Dean-Myatt of the U.K.