1920 3-in-One The Universal Oil & Clock Tonic Vintage Ad #2093

This original 11 x 14" magazine ad advertises a popular product for 1920 and still popular today in 2026!  3-In-One Universal Oil and Clock Tonic!  The oil cleans, & polishes and prevents rust while providing lubrication!  At this time the product came in glass bottles rather than the familiar red and white oil cans we know today!