Go to proofhouse.com
Should be able to find this model in the Manufacture Date - Winchester section of www.oldguns.net. In fact, you can find it there. I just did. It's 1958.
If you would post the serial number and model number,I can give you a date of manufacture.
The serial number is needed to determine the manufacture date.
If you would be so kind as to post the serial number of your Winchester model 1873 rifle in your question,I would be able to tell you the date of Manufacture of your Winchester model 1873 rifle.
It it is a Winchester, you can find sn information at proofhouse.com.
With the serial number that you supplied,your Winchester model 1894 lever action rifle was produced by Winchester in the year 1972.
You should be able to contact Winchester and see if you may find the year of production by serial number thru there archives.If not I do have the manufacture dates of the first 250,000 made.You will need to have your serial number available to research the date of manufacture.
You can go to http:\\armscollectors.com/srs.htm to find the date for that serival number. I did go to that site and it indicated the date of manufacture 1940.