Crabtree Vintage Bakelite Toggle Light Switch 1Way by www.art-deco-emporium.co.uk
Vintage original Crabtree bakelite vitreous round light one way dolly switch | eBay
1 Gang (Single) Bakelite Switch Brown Dolly On A Solid Light Oak Base [LIN01-1-LK-S2W] - £38.09 : My Switch Shop, Varilight Dimmers, Varilight Switches & Varilight Sockets