#ZZMS051 - Universal Blade Service Letterhead Vintage unused letterhead from the Universal Blade Service in Fond du Lac, WI. They sold and repaired bread machine blades. During the 1920s, aluminum was really a big deal and so I guess they were getting in on that act too as it also says they were the "Home of the all aluminum revolving cake decorating stand"! 4 digit phone number. Unused condition. 11" tall. $0.50