Canadian Contingent 1900 OHMS Letter with Contingent Oval

CANADIAN CONTINGENT: 1900 Blue OHMS small format envelope endorsed "No Stamps No1 Troop, CMR" used from Field Post Office BO (asterisk in cds) MY 24 to "Mrs R C Randall, 117 Victoria Street, Ottawa, Ontario, Canada" re-directed to "The Barracks, Banff, Alberta, NWT." Superb red strike of CANADIAN CONTINGENT MAY 30 1900 oval at lower left. Ottawa arrival cds JU 25, Banff JU 29. A lovely example of this contingent mail. VF, scarce.