1873, 1 Sh. Green, watermark rose branch (\"aerosol\"), plate. 12, EA-FA, horizontal pair with left upper corner of the sheet and edge lettering \"POSTAGE ON. \" on front of cover with bar number cancel \"459\" from \"glasgow 17 FE 77\" registered via London to Milan / Italy, the left stamp at the bottom partly flat, otherwise well perforated, in the perforation a little with age marks, nevertheless decorative and with margin of sheet unusual unit, Michel approximate 225.-, ex collection David Brown