Aha! That's the first time I've seen those 3 Meck models. I'd like to find the portable version.
Well that solves it. It's a '49 Meck with the nameplate missing. It definitely one of the lesser seen 7" sets, although far from one of the most appealing.
Here's another example from the Net. This one is also missing the small brass plaque - or maybe it's the same set.
https://link.springer.com/content/pd...014-0778-x.pdf