This is an original vintage magazine advertisement (size approx 6" x 8½") for W.R. Sykes Interlocking Signal Co Ltd of Clapham, promoting their 'Automatic Facing Point Lock' as used on the Mumbles Electric Railway. 

• Carefully removed from an issue of "The Railway Gazette" magazine dated 1931, it's in very good pre-owned condition with minor signs of handling; ideal for framing, it will be posted in a card-backed envelope for added protection.