Hi Rattler21
I am from Detroit and I am going to re-share your photo. What is the source of this photo? It is not from the Twin Pines Era.
The clue in the COMERICA BANK SIGN. In the milk truck era, COMERICA BANK was called Detroit Bank & Trust Company. They wanted to go national with their banking services so Detroit Bank and Trust Company, changed their name to Comerica. This took place in 1973, and that sign design is also newer. Detroit trivia.
The Detroit Tigers, MLB, play American League baseball at COMERICA PARK, on Woodward Ave. I have this truck on my layout. I will look for photos.
Gary