Marlin
Coast to Coast was a chain of hardware stores. Several companies made guns marked with the brand, and included Savage, Marlin and Stevens. Depends of which gun you are researching.
Ruger, Marlin, Winchester, Colt
G oogle "Marlin Firearms.A history of the guns and the company that made them. Full diagrams of all marlin revolvers.
Remington Remington along with a number of other brand names (DPMS, AAC, Marlin) are all part of the Freedom Group family of companies.
Marlin Firearms: A History of the Guns and the Company That Made Them by William S. Brophy
marlin 12 gauge bolt action goose guns sell for about $200 in great condition
The same Marlin Firearms company the makes rifles USED to. From 1870-1899, Marlin produced very well made Derringers and revolvers.
Is this gun marked Marlin MR-7? If so, Marlin Firearms Co. can give you info on these newer guns.
Wester Field did not make guns, they sold guns manufactured by Marlin, Winchester, Hi Standard, and others through the 1970's.
The Model 1895M in 450 Marlin can be ordered through the Marlin Gallery of Guns, but is currently not available. You can check on line auction sites such as Gunbroker, Gun Auction and Guns America. If you locate one in another state it will need to be shipped to a dealer in your home state for transfer to you.
Marlin