Aluminum token, rough shape: "Manufacturing Co. ... Dallas"

[Iggyks]

Yesterday forecast was 62- I brought old clothes to work, changed at quitting time and headed for an old school that is on my drive home. And realized my detector was in the closet at home. I got home and as a consolation prize went to a lot where a house and barn once stood. Dug this roached aluminum token - melted, pierced and corroded - and thought I had my first play money coin. After some of Airmet Tango's baking soda paste scrubbing, I was able to read "Manufacturing Co." through my lighted magnifier. Took iPhone photos through it as well, and looking at the bigger images on my computer I can see "Dallas" as well. But not able to see what was in the center or along the rest of the rim. And this is the good side - the other side is totally melted smooth. I would love to find out what company issued this!!