We know from articles that a Warhorse was being fished in the early 1950's. Perhaps it was this model. The Warhorse did not show up in the charts until 1958 and it was a different model.
An early Warhorse with the heavy hook hanger. Similar to the F-1000 Warhorse on he 1958 chart.
Similar look to the D-1000 Warhorse on the 1963 chart. This appears to be an uncatalogued color.