Reference books, experience
Percussion cap ignition in muzzle loading firearms was introduced around 1830.
big bore smoothbarrels were made as early as the 18th century
Usually by markings on the weapon or features.
No disrespect intended, but honestly, with no more description than you have given, it could be anywhere from $10 to $50,000 or even more. If manufactured in 1818, it could still be a flintlock and by 1909 it would almost certainly be a breech-loader. A "typical" utility double barrel, either a percussion muzzle-loader circa 1830-1880 or an early breech-loader circa 1865-1915, should bring from $100 to $250 as a mantle decoration. Shotguns by the top makers like Westley Richards or Parker Bros will bring thousands of dollars.
100-400 USD
No. However, if you are a "prohibited person" it is illegal for you to possess 209 shotshell primers. Percussion caps are OK, 209 primers are not.
1850-1870
I purchased a 50.cal CVA Bobcat Muzzle Loader today at Kittry Trading Post in Kittery Maine (USA). The list price was $100.00 but i got it for $85.00. I have also seen the same gun for $65.00 on Google.
No. Remington has never made product for Charles Daly. The Remington 'Spartan' line of shotguns is made in Russia, where Charles Daly shotguns are made in Spain, Italy and Turkey. sales@countrygunsmith.net
Lura J. Loader is the author of "The Big Little Festival" series which follows adventures in the town of Tenalp. The series encompasses themes of friendship, community, and self-discovery.
Depending on condition, these are typically are $125-$175.
Mossberg has made many .410 shotguns- usually bolt actions- but cannot recall ever seeing a muzzleloading .410. Would you like to restate your questions?