George Caswell at Champlin Firearms identified my Beretta 409
just by a verbal description over the phone. He sure knew his stuff.
I would mention to him that there is a smooth curve at the rear of the receiver (i.e. as opposed to a scalloped one). http://www.champlinarms.com
580-237-7388

also, consider this:

The Beretta Silver Hawk, discontinued back in 1967, was resurrected in 1999. The old version sported a satin chrome receiver, high solid rib, checkered pistol grip walnut stock and forearm, double triggers, and plain extractors. It was a boxlock gun with monobloc barrels in 12 (3" chamber) and 10 gauge (3.5" chamber) only. The Silver Hawk Featherweight was similar but lighter and came with a beavertail forearm and standard 2.75" chambers in 12, 16, 20, and 28 gauges with a choice of double triggers or a single non-selective trigger.