used 1864-67 Perf. 12 1/3 9 Sch. yellow cancelled by part "HAMBURG ST. P. NO 10/66" c.d.s. in blue; centred a little to foot with traces of toning and several perforations improved at foot. An attractive example of this rarity. Jakubek certificate. M. 18; D.M. 5,300. Photo