1891-1906 collection of "O.P.S.O." overprints on a variety of values, comprising Newspaper ½d.; Sideface ½d. (2), 1d. (2), 2d. (2), 5d. and 6d.; Pictorial 2½d. (2), 5d. (3), 2/- (2) and 1d. Universal (4); various colours of overprint and twelve used; generally good to fine