Great Britain 1890 10s Ultramarine (I.R. Official), SGO10Great Britain 1890 10s Ultramarine (I. R. Official), SGO10. A very fine used example of this scarce departmental issue neatly cancelled by a Accounts Branch P. O. Glasgow datestamp for 'AU. 1. 1894'. Lovely deep colour. A scarce Government Official stamp in this quality of condition. These Inland Revenue stamps were used solely by revenue officials in the provinces. Mail to and from Head Office passed without a stamp. The London Office used these