Actually, they may be a variation of the Vitavox K-Horn.
I owned CN-191's, the Vitavox Klipschorn; they were different looking for sure, but the similarity is in the Canadian built versions that came out of Kitchener Waterloo area. They looked a bit more "crude" in my opinion then the original CN-191 & those side "wave-forms" near identical.
I figure the original drivers were remove as these shown here have Wharfedale bass drivers in them and, what seems to be, a public address horn atop. The other one, not shown in the picture, has some bastardized wooden horn type enclosure built atop with a small single mid driver and tweeter horn suspended in the cavity.
I reached out to the seller as I would buy them for the cabinets alone and change over the drivers. It's hard to find matching cabinets from the mono era.
Anyhow - way overpriced.
JGP