|Western Electric 500U --
Single line w/ hooded dial lamp and night light switch.
With the switch in one position the light only comes on when
the handset is lifted.
Rotated 90 degrees, the light glows softly when the handset is
on hook (night light) and brighter when off hook (for dialing).
This was the first model in the 500 series to have a clear
fingerwheel -- permitting the light to carry around the dial.
Marked 500P/U 12-59