I have one of those, and its been a very convenient tool for changing engines in older vehicles, loading medium heavy items in a pickup or trailer, etc. The worm-gear winch was missing, so I just hang an old 1 ton worm-gear 'riggers' block' type of chain-fall in the centre (but don't think I'd feel good about lifting more than 1/2 ton or so....I've no idea what its original load rating might have been)
I sent mine to be sand-blasted and powder-painted, and so lost the original painted Weaver logo.
Anyone interested in that one should know that they are designed to be taken apart with a pattern of bolts, and could easily be hauled, in pieces, in a common small pickup, or even in the trunk of a medium-size car (or the back seat of an open touring car, if you prefer 1915 technology).
cheers
Carla