I hate to burst everybody's bubble, BUT........................................................................
Almost a year ago, I ordered a Menard's O-27-sized O-gauge flat car with a 1955 Pepsi Cola beverage truck load (and still in their catalog as of a week or two ago). Thinking it might be 1/48 or even 1/50 scale, I was initially disappointed when I first got it. While a really cool truck, it is NOT 1/48 scale, or even close to it. No scale is indicated on the bottom side of the truck, as you might find on some die-cast vehicles. And although I still haven't verified the exact scale, I believe it is probably much closer to 1/64 scale than anything.
The Classic Metal Works 'Whistle Soda' and the 'O-So Grape' trucks look to be the spittin' image of the Pepsi truck on my Menard's flat car. With that in mind , then they are NOT 1/48 scale either.
And along the same lines, I also have serious doubts that the 1948 COE Box Trucks, "REA' and 'Falstaff Beer' are 1/48 scale, either. I'd be willing to bet that they are the same scale as the beverage trucks. However, without one in my hands, I can't say for certain.
Still nice looking trucks though. They'd be great for toy train operators or anybody doing O-27-sized layouts. Or background (as in way, way back) vehicles on a scale layout. Heck, I may even pick me up a few sometime in the future when train shows resume.
Sorry to disappoint. 
