Russia. (Germany - Prussian Mail). 1870. Registered stamp-less envelope addressed to London cancelled by St. Petersburg date stamp '6th Oct 70' with framed Russian 'Registered', hand-stamp 'P.D.' in red, routed via Prussia with circular 'Prussia/ Registered' transit 'Oc 22' and 'Registered/ W.C.D.O.' arrival 'Oct 24' with hand-struck 'Crown/ Registered' on face in red and rated '68' in blue crayon with 5 wax seals on reverse.