I made a another stab at laying in a receiver to take an old double barrel set I have had lying about. I am thinking it is the Model 325, but I am not completely sure. The floorplate is the only reliable place where these shotguns seem to be stamped with the model number, and that part was missing. The view I really needed was from the bottom of the hammerless receiver looking in, if the wedge bottom lock is present then it most likely is the 325. What throws me off is the single butterfly spring arrangement under the floorplate that is apparently the sear spring(s), covering the bottom of the top lever assembly. I can find no such part in schematics so far, but schematics for this specific model seem rare. Soon the receiver will arrive, and we will see exactly what we got.