1938 (30 Jul) airmail cover (small opening faults) to Sydney franked for 1l 50s ½oz airmail rate, adhesives tied by two superb strikes of double-oval 'KEMERI-RIGA/P.V. No. 22.' datestamp, equally fine oval 'MARIENBURG-KONIGSBERG/ BAHNPOST' T.P.O. transit on reverse. Extraordinary origin/destination