​​Original old stereo magazine vintage ad for H. H. SCOTT INC. Main office and factory was located at 111 Powdermill Road, Maynard, MA. Model 310-D FM Tuner used for Telstar Satellite tests by Bell System engineers.  They used the sensitive broadcast monitor tuner for this unique experiment of FM reception.  This old one page 1963 high fidelity equipment component trade magazine advertisement would display beautifully matted and framed.  It would make a nice accompaniment to your vintage stereo.