your Winchester model 71 was made in 1956.
Model 70 Winchester delux 348 i think.
The gun was made in 1936.
It was manufactured in 1950.
The gun was made in 1956.
@1953
It was made in 1940
Made in 1949.
My 71 has a serial # 20xxx and is made in 1937.
c. 1936. sales@countrygunsmith.net
Manufacture date for SN 12450 is 1937.
Proofhouse.com has sn tables.