Great Britain, Office of Works and Army Official as Official Stamp issues of 1896-1902, from halfpenny to ten pence, described with SG numbers on a loose leaf album leaves, all with overprint O.W. Official on regular issues, 5d SG O34 (illustrated) cancelled Parliament St. S.W. Ju 9 03; 10d O35 (illustrated), 036 (2), O41 - O45. All used, mostly well centred, several rare. (11)
Ex C.R. Deane Collection several from Mowbray in 2009-2010, O34 from Status (2008 for $1,211), this stamp with a certificate from Karl-Albert Louis, Germany, dated 18 November 2006.