Various Villiers assembly posters. 
Price is £20 for one poster.
 
Villiers Engineering was a manufacturer of motorcycles and cycle parts, and an engineering company based in Villiers Street, Wolverhampton, England.
During WW1 & WW2, they switched production to munitions, in particular fuses.
In the early 1960s, the company was taken over by Manganese Bronze Holdings, and in 1966 together with AMC became Norton-Villiers, and in 1972 merged with the BSA group to become Norton-Villiers-Triumph, which eventually went into liquidation in 1978.
 
source: https://en.wikipedia.org/wiki/Villiers_Engineering