Born in 1827 in Seto, Inoue Ryosai moved to Edo (Tokyo) in 1866 and exhibited nationally and internationally from 1877 until 1903, winning many prizes. Two almost identically shaped vases by him are in the Khalili collection.1
1 Oliver Impey and Malcolm Fairley, The Nasser D. Khalili Collection of Japanese Art (London, 1995), vol. 5, part 1, cat. nos. 89 and 91.