Made by AL Ljutic himself (my father-in-law) S/N 029 12ga. combo set has a 33 inch single barrel and 28 inch doubles. There is a 710 screw in choke on the single and 730 on the lower 735 on the upper. It has a pull release trigger. Jimmy Ljutic modified the ribs as it was his gun before I got it. The single has and adjustable front sight. $15K.
Ape, it is an early bi-gun not sure when Al made it, his son Joe made the LM6's. I made some of the components for the LM6 starting back in the 1980's when i worked directly for Joe.
After many years I recently found a dbl release trigger for my Bi-Gun. Any chance you've got the parts to convert these triggers?