[Ron Ramirez]

It's a Model 16 Code 125 (4-band).

16 Code 121 - 5-band, 80 rectifier, in cathedral and the first Deco tombstone cabinet
16 Code 122 - 5-band, console versions, 5Z3 rectifier
16 Code 123 - 5-band, 5Z3 rectifier, chairside model, upside-down dial scale

16 Code 125 - 4-band, 80 rectifier, tombstones (both Deco and flat-top)
16 Code 126 - 4-band, 5Z3 rectifier, console versions
16 Code 127 - 4-band, 5Z3 rectifier, chairside model, upside-down dial scale

500 (1933-34) - 16 Code 122 chassis, manual record player
500X (1935) - Early production uses 16-122 chassis, later models 16-126 chassis; manual record player
501X (1935) - Early production uses 16-122 chassis, later models 16-126 chassis; automatic record player, same cabinet as 1935 500X