I met Jake Simmons at the Coorsfest in 1983, he was shooting on the bench next to me, and invited me over to his little trailer after the match. So...I walked over to find Jake entertaining Dean Miller and John Amber, so I sat down amongst them, not knowing quite what to say, and then Jake went inside and brought out a bejeweled Zischang Borchardt with everything on it. As I recall it looked something like the one in the middle;

Wonder what the pin is above the lever pin on the lower two rifles.  I wonder if it’s some sort of bbl lock for takedown ?

No pictures in Sellers book have this pin.

John

I think you must be correct that the pin locks the bbl for multiple sets.  It just looks really low in relation to where the bottom of the 15/16 bbl thread would be.  Must have had a very shallow engagement.

John

In reference to Zischang, I ran across a surprising bit of information recently.  I bought a Lefever side by side and it came with a very nice book about Dan Lefever.  Anyway, while thumbing thru looking at pictures of the nice shotguns, lo and behold, there was one with A.O. Zischang engraved on the sideplate.   

I then started reading and according to this book, he was the superintendent of the barrel department for Lefever for a while before he headed off to open his own shop.  You guys all probably knew this, but I certainly didn't.
Phil