The Knox Mason Jar from the 1930-40s features a clear pint-sized design with an aluminum Presto glass-lined lid, making it a unique collectible piece from the United States. This vintage jar, with the Knox brand name, is a classic addition for collectors of modern jars and bottles. Its clear color and authentic design from the mid-20th century add a touch of nostalgia to any collection.  The jar measures approximately 5 1/4 inches tall x 2 7/8 inches wide.