This is a vintage hinged flip-top oil/gravity feed machinery oiler is mfg by GITS Brothers.  These cups wee threaded directly into bearings, motors, engines, lathes, machines and early automotive components to provide a continuous drip lubrication.  We have several of these in stock, all have working hinges with undamaged threads.  We will only ship these to the lower 48 states, and if you purchase multiples we will combine shipping costs.