Not sure what "TEC" Heil was, (Truck Equipment Co.??) but some oldtimers might know. Don't know when this was made or used, either. 1940s or 50s? It's definitely the Heil logo style font, though, that was created in the 1920s. Interesting Sign. Porcelain front in good condition some discoloration, and some surface rust on the back. Measures a little over 9" wide and 5" deep.
$40.00 plus $5.00 shipping
If interested, call to arrange payment and shipping.
Call Gary, 423-580-5736, or email email@example.com