Advertising Poster BSA Bicycles Perfect in Every Part. Original vintage advertising poster for B.S.A Bicycles - Perfect in Every Part. The poster features a black and white photograph of a man and a woman on bicycles on a country lane. Founded in 1861, the Birmingham Small Arms Company was a British industrial combine producing military and sports firearms as well as bicycles, motorcycles, cars and machine tools. Good condition, folds, creasing, pinholes. Country of issue: UK, designer: Unknown, size (cm): 64x47, year of printing: 1920s.