1Glass Door Knob P.E. Guerin PG-802May 29, 2019/in Glass Doorknobs, P.E.Guerin / Fontaine Hardware/by adminIn excellent condition this Guerin glass door knob with a slight spiral design has 1909 Patent date. . no scratches or nicks. Measures 2-1/4″ in diameter and takes a 1/4″ spindle. ONE AVAILABLE