An early model Lefever single-barrel 12-gauge shotgun with a 30-inch plain barrel can be found for sale online for $300. This is the price for one that is in excellent condition.
The Lefever was mfg. in 1935.
If it is a double, remove barrel and you will see it along with serial #.
when was the carolina arms 16 gauge single barrel shotgun made
1901 single barrel shotgun, washingtion
Turn of the century.
The best that I can do is say that the Lefever Nitro special was made from 1921-1948.
How much is a 16 gage single barrel shotgun model 350A Revelation
Your Shotgun was made by Lefever from 1885-1919.Lefever started business in the year 1885.A (G grade) model hammerless 12 gauge shotgun will range in price from 800-1,400 dollars for a gun showing between 10%-70% of its original finish remaining,and a good set of bores.
Blue Book of Gun Values