Original vintage ad for SHERWOOD ELECTRONIC LABORATORIES INC.  S-2200 FM Stereo tuner, S-5000 Dual Amplifier-Preamplifier are pictured.  Also shown is a letter from Felix R. Bremy, Executive Director of the American Audio Institute giving the rating of the S-5000 to be the highest of all 18 amplifiers tested in the AAI Evaluation Test Reports.
Main office was located at 4300 N. California Avenue, Chicago, IL.
This unique old one page 1960 high fidelity component trade magazine advertisement would display beautifully matted and framed.  It would make a nice accompaniment to your vintage stereo.