Legrand 60-Watt Porcelain Pull Chain Ceiling Socket, White in the Light Sockets department at Lowes.com
European Standard Ceramic Socket Flame Retardant And Smooth Wall Power Electrical Sockets EU Outlet - AliExpress
Double-socket electrical outlet in white porcelain and antique wood.
EATON Wiring 604-SP 660-Watt 250-volt Medium Base Ceiling Receptacle Lamp Holder, Porcelain, White - Light Sockets - Amazon.com
Medium Base Porcelain Sockets w/Mounting Brackets (3 pcs.) — MonsterFastener
Leviton Glazed Porcelain Lamp Holder with Pull Chain and Outlet R60-09726-00C - The Home Depot
Amazon.com: UltraPro Porcelain Light Socket with Outlet and Pull Chain Light Fixture, Light Bulb Socket, Medium Base, Grounded Plug, Indoor Lighting, Mount on 3-1/4” or 4” Box, UL Listed, White, 18305,1-Pack :
Porcelain Surface Mounted Electrical Vintage Socket for Home Decor - China Italy Sockets, Socket | Made-in-China.com