Originally Posted by LetFly
AGS, O for one barrel on top as in Over and the other barrel under the top barrel as in , Under.
I can see that now. When first posted, I looked at the pictures in great detail and pictures 3, 5, 6, 7 and 8 all resemble a side by side action. I have similar Berettas and Merkels from the period, and they don't seem to have the pronounced action balls with the vertical rise this gun exhibits. There is not a picture of the breech end of the barrels, so I didn't pick up on the orientation.