cover 1858 (16 Nov.) entire letter from Port Arthur to the Governor at Hobart, bearing 1858 6d. dull lilac with small to large margins, cancelled "61", showing "PRISONER'S LETTER/Crown/PORT ARTHUR" circular h.s. (one of two recorded examples) and signed "J Boyd, Civil Commandant" at lower left, light "PAID" c.d.s. in red and oval "C.G.O./RECEIVED" d.s. (another strike has been applied to page one of the letter). Extremely rare. Photo