70-100 years, give or take.
Bridge gun company 16 ga choke
What is the value of a Spencer Gun Company 12 guage choke shot gun serial number A203136?
Measure it, or have a gunsmith measure it, with a choke gauge.
50-100 USD
The Winchester 140 12 gauge has a choke barrel at 28". This is the same choke size as the 20 gauge model.
Would not recommend using a full choke or even a 20 gauge, 12s are much better
It has a nickel steel barrel and is a 12 gauge with a mod choke. It has a nickel steel barrel and is a 12 gauge with a mod choke. It has a nickel steel barrel and is a 12 gauge with a mod choke.
You will have to contact Browning to find out.
No
50-150 USD
Modified choke with the 28" barrel.
The choke identifications are on the underside of the barrel. You can see them if you take off the forearm.