Motor-driven ski-doo (skidoo) Bombardier Alpine sledge hauler on caterpillar tracks. It has a red-painted wooden front. Inscribed: 'Bombadier Rotax GMBH Gunskirchen Mot. Nr. 2905623 Bore 2 x 76 mm Stroke 70 mm Capac. 635cc Type 640 Made in Austria.', 'Model - Alpine. Engine type - 640 Gas - Regular. Carb. Initial adjust HRM 7A, High speed 1(+1/4/-0), Low speed 1(+ 1/4 -0) RPM, idle speed 1500/1800 Idle speed screw 1- 1 1/4 Ignition timing - Direct 146-166, Indirect 155-172, Point gap 014-018, Spark plug type - Bosche Spark plug gap-020, Severe use -M 225. Moderate use M175 Gas-oil ratio Ski-do oil 50/1 12 oz oil - 5 US Gal gas 16 oz oil - 5 Imp. Gal. Gas.'

This ski-doo was one of three used by Sir Ranulph Fiennes, Charles Burton and Oliver Shepard to cross the Antactic via the South Pole, 1980-81, as part of the Transglobe Expedition.