A very useful summary!
My 'Habicht' 12 bore boxlock non-ejector was made (maker unknown) with sling swivels and a big cheekpiece for the Austrian market in 1964. It has a Greener crossbolt and a bit of basic engraving. The 27.5" barrels weigh 1350 grams, with a total weight of only 6 lbs 12 oz. Chokes were Modified and Full, now opened out by me somewhat.
The stock is completely straight, like a rifle, with no cast, which explains why I hit so little with it in my earlier years.
HB
HB,
I've had a couple of very similar shotguns and found them to be outstandingly useful guns. Guessing purely on the known characteristics I'd be tempted to place your gun at the low end of the medium game gun part of the continuum of shotguns.
Thank you for sharing.