Impossible to answer without a detailed description of ALL markings, condition, box, accessories, paperwork
These were made between the years 1978-1985.
I can say that the stevens model 9478 shotgun was made during the years 1978-1985.
A breakdown of the parts for a Stevens Savage Arms Model 9478 is found in the book The Gun Digest Book of Firearms Assembly/Disassembly Part V - Shotgun. It has exploded views of the stock and its availability on the market.
Bobs gun shop google it! $85 + 95 stock forensic $40+ 35
Your stevens model 9478 shotgun was made during the years 1978-1985.while serial numbers were on the shotguns I do not believe that serial number records were kept as to the year of production.
value of Stevens model 94 long tom perfect condition
it depends on the model...........
50-300 USD depending on condition
50-125 USD
50-160 or so
Teddy Roosevelt's first gun was a Winchester, model 1876. He ordered it when he was 22 years old. No other gun was shot as much or was as reliable as the Winchester.
Proofhouse.com has sn data