1948 E.F. Houghton Perliton 323 Ad - For threaded or recessed parts

This is a 1948 ad for a E.F. Houghton Perliton 323! The size of the ad is approximately 8x11inches. The caption for this ad is 'For threaded or recessed parts that have been hard to clean: Carburize in Houghton's new Perliton W' The ad is in great condition. This vintage ad would look great framed and displayed! Add it to your collection today!