Zenith – Model G516 Chassis 5G03 AM 5 Tube Superhetrodyne Schematic Layout Parts List Alignment Data – 1951
Rider and Beitman Pages for Zenith – Model G516 Chassis 5G03 AM 5 Tube Superhetrodyne – 1951
Radio Included an Electric Clock and Alarm
A somewhat unique feature was a AC power plug in the back of the radio

Schematic from Rider 195“1 Version
Schematic from Beitman 1950
Zenith – Model G516 Chassis 5G03 AM 5 Tube Superhetrodyne Schematic Layout Parts List Alignment Data – 1951