PhysDoc,
You have a non-selective Miller "type" trigger set up to fire right bbl first. I say Miller "type" because being unmarked we can't be certain that it was made by the Miller company. I'm not sure what brand of gun your trigger was made for but I can say with some certainty that it wasn't for a Parker, Fox, Ithaca or L.C. Smith. The Millers adapted their trigger to many different guns so it is just about impossible to say for sure.
Also, to add to the commentary of this original thread, I have had some experience working with both Miller made and Ithaca "Howland" triggers in Ithaca guns. The only real difference I can find in them is that the "Howland" trigger uses a two-piece main trigger body whereas the Miller had a more simple one-piece trigger body. I surmise that this was the only "difference" relating to the new patent. The two-piece is also inferior as it necessitates milling a wider slot in the trigger post which results in the sides becoming quite thin. I recently had to repair a Howland trigger that had broken in this area due to being thin. I haven't researched the actual Howland patent that closely but this is what I have observed first-hand working on the triggers.
Hope this helps.
Dan
