E.Masquelier is a Belgian firm that was selling guns at least through the 1960's. I am not sure if the name is still being used today. Like most Belgian shotguns, actual manufacture was a collaborative effort and then the guns were marketed under an established name. Masquelier guns need to be evaluated individually, since there is a great deal of variability in amount of engraving, ornamentation, and so forth. Smaller gauges bring considerably more than larger. Recent auction sales have seen small bore Masquelier shotguns with only moderate decoration sell for nearly $1000. Have the gun evaluated by a knowledgable and reputable gunsmith - not Bubba Joe at the local bait and tackle. You may just have a nice surprise in store. www.countrygunsmith.net
That Colt .32 hammerless was made in 1924.
Made for Sears Roebuck by Stevens. There may be a model number on the right side of the receiver (most likely 5000, 5100, or 311) or a Sears product number on the barrel (101.6?) which could give an approximate date.
If it is a Colt 1908 hammerless .25 with that serial number, it was made in 1912.
A Colt 1908 hammerless .25 with that serial number was made in 1921.
First question: is this a hammer or a hammerless shotgun? If a hammer gun it looks like potential year of manufacture was 1895. If hammerless, around 1901. If the firearm is in decent shape, you have something there. I have a hammerless twelve bore s x s field grade with the serial number 307204, it looks like mine was manufactured in 1906. You may google "lc smith 12 gauge year of manufacture" and find more information. Best of luck.
1987
Your shotgun was manufactured in 1947.
70-100 years. 50-150 USD
The 1903 Colt Hammerless .32 with serial # 137295 was manufactured in 1912. about 1913
The Colt model 1908 hammerless .25 with that serial number was manufactured in 1919,
The marlin model 28 hammerless shotgun was produced from 1913-1922.
No published sn data