There appears to have been a spot to the left where another scale may have been. Just look at the cool advertising on this! This is lists many neat local businesses. Also there is a slot up top that holds an ATLAS.
This is a really cool postal related collectible. I tried to research but could not find another one of these.
This was made by WT HUNTER out of ANN ARBOR, MICHIGAN. Please examine the photos to see exact style, condition and size.