Some of the jars in the collection have these 'container details' so stylized that they are reminiscent of a 'double-headed swan' motif. Swans symbolize the fragility of life. They are also a symbol of fidelity. Whether used as a meaningful symbol, or merely as a symmetrical motif, images of double swans remain popular today.
“Container Details,” Exhibits, accessed January 19, 2018, http://utswlibrary.omeka.net/items/show/137.