i think i have one of those as well or very similar for the Canadian 1/2 tons, but it's too short for the 3/4 and 1 Tons which require a slightly taller one based on some research online, the taller one has about an inch and a half of extra neck below the top plate and the jack body attached photo is very similar to the photos i found of supposedly the correct 3800 USA jack, but this one is more solid, being made of cast it is tall enough for the 1ton so i use it for now
i'm always on the look out for tools or documentation about tools so keep diggin' thanks -stan
