they were made out of steel in 1885 They were all made with steel barrels. The earliest, by Lefever & Barber Co in 1874-75 were damascus or laminated steel. Fluid steel barrels would have been introduced about 1900.
There was no specific date, you could order them either way for many years, damascus was usually the more expensive of the two. I'm quite sure though that any Lefevers made by Ithaca had "steel" barrels (although there probably were some Lefever made guns left over and sold by Ithaca). Ithaca acquired Lefever something around 1916.
Made in 1925
In order to determine the age of Lefever shotgun, the serial number must be known. However, Lefever shotguns were only made and distributed between 1885-1916.
Ithaca Firearms manufactured the Lefever Nitro Special shotgun with serial numbers between 101600 and 119899 in 1922.
700.00 dollars
I would say that with the serial number 1321XX,we are looking at your shotgun being made by ithaca(who made the lefever nitro special) in 1924.
1927
SteelSteel
Wooden barrels are made by a Cooper, and that is largely a hand craft. Steel barrels are made in a sheet metal shop, as this workplace is called, and this process is fully automated.
The best that I can do is say that the Lefever Nitro special was made from 1921-1948.
200-2000 USD What is your source ? thank you
Blue Book of Gun Values