Proof Specimen The complete set of Waterlow sample sheets of nine (3 x 3) comprising se-tenant sheets (3) of ½c. + 1c. + 2c. in powder blue, deep rose, and slate blue, sheets (3) of 4c. + 5c. + 10c. in brown, reddish vermilion, and greenish blue, sheets (3) of 20c. + 30c. + 50c. in claret, pale orange, and deep purple, and sheets (3) of $1 + $2 + $5 in deep claret and yellow, blue and yellow, and red and yellow, all overprinted "WATERLOW & SONS LTD./SPECIMEN" and with small security punch holes. A remarkable assembly. 12 sheets. Photo