Keyless Porcelain Light Socket with Hickey Medium Base

LEVITON 9347 KEYLESS LAMP HOLDER INTERIOR SOCKET MEDIUM BASE

Jandorf PORCELAIN Medium Base (E26) KEYLESS 2-PIECE Ring Socket Light Bulb 60576

Solid Brass Light Socket, Keyless, Vintage Industrial Lamps Pendants, 6 Options

Porcelain Light Socket White or Black, Vintage Industrial Lamps, Pendants, Bulbs

4pc.LAMP SOCKET Porcelain 2piece Ring Type Medium base E26.Lamp holder.Leviton

Lot of 2 Vintage Intermediate E17 Porcelain Marquee Sign Light Socket 250V, 75W.