cover REGISTERED: 1863-64 perf. 9½ 15Kr. affixed to 1867 (21 Sept.) entire letter to Pesth and tied by "FIUME/Nachm" c.d.s., showing circular framed "RECOMANDIRT" in blue adjacent; some faults including horizontal fold (affecting adhesive) and some staining. A rare marking. Ryan 15, 300p.