They refer to the type of action.
1876 westly Richards boxlock what is it worth?
The best information I have suggests 1920-1932.
J. Stevens Model 225 Hammer Boxlock: Same price for models 1877, 250, 260, 270, 280 and Hammerless Boxlock 380 Information as of 2008 Firearms Price & Reference guide NIB=1200, Exc=575, V.G.=450, Good=350, Fair=250, Poor=200
Depends on if it is sidelock or boxlock. Generally, 1916-1948. sales@countrygunsmith.net
John - The Nitro Special name was used by J. Stevens Arms & Tool Co. You didn't tell us what kind of a shotgun it is, but I suspect it is a break-open breech single shot or double barrel. It may have side-hammers, or a boxlock with rear hammers or a hammerless boxlock and the barrel(s) may be either laminated or fluid steel. All those things and the condition of the gun will affect the value. It MIGHT be worth $250 if it is a good to very good boxlock with fluid steel barrels or less than $10 for any variation in broken/worn out/rusted condition.
94 years old, +/- 20. If twist steel barrels and side hammers, more likely (but not absolutely) prior to WWI. If fluid steel and a boxlock (back hammers or hammerless) ALMOST certainly after c. 1905.
BOXLOCK MODEL- 12 or 20 ga., standard model with light engraving.Grading100%98%95%90%80%70%60%$3,000$2,600$2,300$1,950$1,600$1,300$995
Will need to know exactly how the shotgun is marked, sidelock or boxlock, what gauge, etc. Lefever went through several changes, ending up as part of Ithaca. sales@countrygunsmith.net
WW Greener took over his father's business in 1869 and built a reputation with a "medium priced weapon of sound workmanship" In recent years the company, still based in Birmingham, has built a small quantity of high grade guns. Boxlock non-ejectors $1,000 to $3,000 Boxlock ejectors $1,500 to $50,000 (yes, 50) Sidelock non-ejectors $2,000 to $7,000 Sidelock ejectors $3,000 to $100,000 (yes, 100) Hammer guns $1,000 to $3,000 I suggest you contact a reputable gunsmith for a professional appraisal.
What am I missing here? You want to know when it was made but you say the date made is engraved on the forearm? Looking through the store brand cross over list, the only Spanish maker of Sears shotguns I find is Laurona. Laurona was founded in 1941 and manufactured side-by-side shotguns until 1978. The Model 13 was a boxlock sold through Sears & Roebuck, and most boxlock doubles look similar.
The model 235 hammer boxlock prices asof the year 2000, are NIB-800, EXC-400, V.g.350, good-300,Fair-250 poor-200.