You will need to include the model number of your Winchester to get a answer.
If it is a Winchester Model 94, made in 1981.
Your question has used the serial number of your Winchester,not the Model number.Please include a description of your Winchester along with the model number,and the serial number to get a answer about your Winchester.
I would have to have the model number along with the serial number to correctly date your winchester.
The Winchester model 69A is a pre-serial number firearm and as such does not have one.
Your Winchester model 1894 rifle was made by winchester in 1971,with the serial number you provided.
According to OldGuns.net, the year of manufacture for serial number 76526 is 1900.
Model 70 winchester serial number 432523 chambered in 416 rigby
With the serial number that you provided,your winchester model 1894 was made by winchester in 1954.
with the serial number that you provided,your winchester model 1912 shotgun was made by winchester in 1930.
Your Winchester model 74 was made by Winchester in the year 1949,with the serial number that you provided.
With the serial number that you supplied,your Winchester model 70 rifle was produced by Winchester in the year 1973.