This is an original old Aviación y Comercio SA (Aviaco) passenger ticket (size approx 3¼" x 8") for a return flight from Birmingham to Tenerife, circa late 1970s, issued by Ellerman Sunflight Holidays of Birmingham; also included is the boarding pass for the outward leg, aboard a Douglas DC8.
It's in very good pre-owned condition with minor signs of handling and very slight creasing (please check all scans); it's unmarked and undamaged and will be posted in a card-backed envelope for added protection.