Classic '40s - early '50s 4-ton Blackhawk S4 floor jack. Headlight model with working light. New seals and check balls throughout, but sometimes it fast-lifts and then bypasses for several strokes before lifting the load. It still bleeds off just a little. Holding up one corner of an 8-1/2 ton half-track, it loses about 1/2" in ten minutes. Someone with more talent than I have can mess with it. Or it may improve with use.
It's a beast of a jack for every day use and very collectable for a retro garage. I have seen the key available on ebay. It really deserves to be cosmetically restored and the original paint is there for color matching, although I think the black handle was originally white.
Local pick up only in Lakeside. Asking $275.00