The poster gives details of the Maskelyne & Cooke show. The date is not known but, based on Monday 29 July, the year can only be be 1869, 1872 or 1878. However, 1869 was before Maskelyne and Cooke called themselves The Royal Illusionists (see Ref. no. N2353). Also, had it been 1878 the poster would definitely have mentioned the shows at the Egyptian Hall starting in 1873. So the year must be 1872.