"Wandsbecker Chaußee", small straight line in blue with adjacent manuscript date "11/12.7-8.U." (1867) on reverse of envelope, franked with 1864, ½ sch. black, tied by blue cds. "HAMBURG ST. P. 11/12 67" and adjacent black cds. of the Prussian P.O. of the same day, to Altona; a very fine strike of the rarest of all Hamburg suburbian postmarks, we have only 4 entires recorded; signed HK and Lange BPP certificate.