Not sure if this is the model number, but there is a number H543 on the trolley. Hay trolleys particular one was patented in 1903. A piece of one of the pulleys on this trolley is chipped off but it turns freely. The others are rusted frozen.The rail is about 12' in length with three hooks. The item "Antique F E MYERS Bros hay trolley and rail (trolley model no. H543)" is in sale since Tuesday, February 2, 2021. This item is in the category "Collectibles\Tools, Hardware & Locks\Tools\Pulleys, Block & Tackle". The seller is "1987rednova" and is located in Lebanon, Tennessee. This item can't be shipped, the buyer must pick up the item.