Barrel makers are called coopers.
Serial numbers are not unique between makers. Impossible to answer.
Greener is one. There are dozens of others.
Serial numbers are not unique between makers. Impossible to answer.
Over the past 100 years, many makers have made double barrel 410 shotguns. Provide a detailed description of ALL markings, barrel length, finish,etc., and some one might be able to help you.
Many makers made double barrel 8 bores british ,p.webley ,greener,are just a couple. then there wher American ,Parker, and i believe armi in the sixties made some
A barrel maker is called a cooper.
It depends on the barrel.
Probably not. There is no standardization between makers. Come to think of it, why do different cars use different spark plugs? Same thing.
$15,000,000
Any of the current stock makers should be able to help you.
condition is key. from $150 to several hundred. 28 ga is a premium for all makers.