1 1/2 Dollar imperial yacht black gray violet, peace printing, on piece, centric cancellation single circle postmark \"TSINGTAU 25 4 06\", faultless condition, superb in every respect (choice copy), expertized Friedemann and photo expertize Steuer BPP (2021) : \". Stamp of the issue 1905 with UV lamps diagnosis \"red orange\" on original letter piece is genuine and date-appropriate cancelled. They is in good condition. \", Michel 260.-