33-STG Stylus and Tracking TEST RECORD, Golden Crest

33-STG Stylus and Tracking TEST RECORD, Golden Crest Laboratory Series.   600 cycle tone followed by 5 seconds of silent grooves. Follow directions on jacket for both MONAURAL and STEREO.  33⅓ rpm LONG PLAYING, 7-inch vinyl, mint condition –  to be played on an electric phonograph with an L.P. needle.  With original sleeve.