Marked: Sleeper Electric / Alternating Current / 90-125 Volts AC 60 Cycles. / No. 113227 / Made in USA by / Sleeper Radio & Mfg. Corp. / Long Island City, N.Y. / Pats. Pending". Unit appears to be the chassis from a "Sleeper Scout 64" tuned radio frequency (TRF) receiver. Unit employs five tubes including a UX-171 power output tube. Other tubes cited as UV-201A and UX-216B. Two tubes are missing. Wavelength control has a two-gang tuning capacitor, and antenna control has a single section capacitor. No cabinet, chassis only. Reference: Langley Set Index, page 63, for Sleep Radios. Also: https://www.radiomuseum.org/r/sleeper_scout_64.html.