nmbm[23] - Matador {1 of 2}

A process of elimination on the 170 marques listed on the collections page, and a couple of tiny clues in the image, makes me fairly sure that this is a Matador.

I was interested in the shape of the crankcases, but should have taken one with the tank badge showing ...
Luckily, I did take a shot of the info card, which states that this 'bike is a 1925 Matador with a 350cc Bradshaw engine. The shape of the crankcase shows this is the design known as an "oil-boiler", with the cylinder tucked down into the crankcase, with the large surface area which acts as a radiator to dissipate heat from the circulating oil.