It appears that this may have originally had eight wheels and the inside wheels were removed at one point in time. If you Google Milwaukee tool youll see it.
Was modified at some point long ago. The item "Antique Milwaukee Hay Tool Cast Iron Trolley 1908 Barn Carrier Farm Wisconsin" is in sale since Friday, August 21, 2020.
This item is in the category "Collectibles\Tools, Hardware & Locks\Tools\Pulleys, Block & Tackle".josephcolton" and is located in Oostburg, Wisconsin. This item can be shipped to United States.