STEEL CITY NAT'L BANK thermometer

Advertising thermometer from THE STEEL CITY NATIONAL BANK of Chicago, "Your Friendly Neighborhood National Bank". Based on the phone number format I'd guess it dates from the 1940's-50's. Made of stamped steel and mounted in a simple aluminum swivel bracket with nifty hardware. Measures about 8" long and 2.5" wide.

[edit]
Had a chance just now to run the street address thru Google Maps. Streetview indeed shows a quite handsome bank building still existing at that corner, though its original (more like 1920's?) stonework facade is engraved UNION STATE BANK, and there's now an illuminated plastic sign with a "mb" logo hanging off the corner of the building, apparently their current name/logo.