Very difficult to find the age on these various models. The Stevens M87J was also built as a store or House Brand. Savage, Stevens, Springfield, Fox, Sears, Cotter & co., C.I.L. & Belknap were just a few of the know ones. The 87J was a Pre-1968 rifle at a minimum. Most I've seen do not have the S/N as required by the GCA 1968. They are somewhat rare, but not very valuable. This rifle is often referred to as a "Springfield 87J" or a Savage/Stevens 87J or simply the Stevens 87J. They didn't last very long because they had a very frustrating way of jamming, no matter how clean the rifle. A dry film lube was recommended for the magazine guide and lifter. The spring & bumper were also suspect on some models. The original firing pin was weak and would often break. A conversion kit was designed with a "T" style firing pin and sold as an upgrade in the 1970's. These are still available from Numrich or e-gunparts.com Unfortunately, these languish in closets all over the country and sell for $100-$150 in mint condition.
There is not much history of the coat on record but there are biographies on Isaac Stevens which may provide information on his coat. I recommend you research "The history of Isaac Stevens' coat." or simply "Isaac Stevens".
John L. Stevens has written: 'History of Gustavus Adolphus'
Just another model in the Stevens line.
Thomas A. Stevens has written: 'Potapoug Quarter' -- subject(s): Biography, History
Elisha Stevens has written: 'Elisha Stevens, fragments of memoranda' -- subject(s): Accessible book, History, Personal narratives
George W Stevens has written: 'Adventures' -- subject(s): Anecdotes, History
Henk Stevens has written: 'Fa waka' -- subject(s): History, Pictorial works
this gun is a 16gauge pump mfg. by Stevens arms. would like some history on gun
Ebenezer Stevens has written: 'Warrant of Ebenezer Stevens' -- subject(s): New Hampshire. Provincial Congress, Arrest, New Hampshire, History
Patricia Bunning Stevens has written: 'Rare bits' -- subject(s): Cookery, History
See the link below-
Andrew. Stevens has written: 'Politico's guide to local government' -- subject(s): History, Local government