Ken:
Russ Rupple had one that I procrastinated and did not buy before he became ill and sold it on. I think it went to California to either a dealer or an auction. Somewhere along the line, I was told that there were five such guns.
Here is the gist of what he told me.
The guns were typical Lefever but with Lindner's stamp on the barrels and the other typical markings of Suhl of the time.
If I remember, a great grandson of Lefever owned one at some time and has posted such.
I can't be certain but do think that they were marked Daly guns and had nothing but Lefever design to identify them. Makes sense.
Best,
John

Humble member of the League of Extraodinary Gentlemen (LEG). Joined 14 March, 2006. Member #1.