cool things with wheels since 2006
That should read Siddeley Special. It was a high end model from Armstrong Siddeley in the early 1930s. The sphinx mascot was the idea of John Davenport Siddeley who was almost as important to the British motor industry as people like Walter Chrysler were to the US industry.
thanks! I'm not familiar enough with Siddeley to have know they had a couple more letters in their company name