Based on the style and carrying handle I believe it is a Duff jack. Lift and lowering mechanisms both work. Jack lifts to approx 20 high. If you know what model this jack is, please message me. The item "Duff Norton Railroad Jack Lift, 20 Ton Capacity, Ratchet, Mechanical" is in sale since Monday, June 10, 2019.
This item is in the category "Collectibles\Transportation\Railroadiana & Trains\Hardware\Tools". The seller is "asperaco" and is located in Dennis, Kansas.
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