Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,545 pages of information and 233,965 images on early companies, their products and the people who designed and built them.
From 1920-22 Winco was a motorcycle (presume this was the same concern).
For a few years after the end of World War I, there was a boom in the motorcycle trade. Many firms entered the market using proprietary components, probably assembled in a cycle shop or back-street garage. The engine on this model was a 261cc Precision single.
Few such firms lasted long without sufficient capital. The clever dealers had moved on, as this one did.