I recently bought sight unseen what was listed as a 1955 Imperial jack. This jack certainly is old but does not look anything like the jack shown in my user manual. This one has a removable handle on the top that turns a large verticle screw enclosed in a cylindrical column with a pertruding bumper hook. Help....you experts on old car items....what do I have here, was it an option for the standard jack or what. It appears to be a nice item of the period and works well.