Vtg Barn Sliding Door Hardware Roller 4" Hanger Big 4 National Mfg Co USA 1940's guessing 40's from the box
some info about national below
National Manufacturing Co. was started in 1901 as a small wagon company in Sterling, Illinois. The focus soon turned to manufacturing and selling general hardware and over the course of the next century, National Hardware grew to be one of the leaders in builder hardware. Today, the National Hardware brand has reached global status and offers more than 7,500 products. Our focus is on providing the best hardware and service to our valued customers. National Hardware focuses on three main categories of excellence, providing our customers with the best products and service in the industry.
selling as pictured.
more than welcome to pick up at shop in butler pa & save shipping.
070925 cg