Thats a load a matic Ford 1949-1953.... Great distributor as long as cam and carb are stock as it uses vacuum only for advance . Sometimes theres a problem with the lead wire under the plate after a ton of miles ......NAPA has everything for these...Yours is missing the vac unit.
Caution , the new vacuum from napa doest have the hose in the end of the shaft for the retaining clip drilled correctly.