Instructions
Navigate to the View-Master Visual Reference page and examine the listing of View-Master-related products. Pictures of View-Masters ranging from the original View-Master introduced in 1939 to very recent models are available for review. The Visual Reference page is available free of charge directly from the 20th Century Stereo Viewers website.
Click on the product that most closely resembles the View-Master that will be dated. If two products resemble the View-Master in possession, click on both links as detailed information that might help identify the specific View-Master model is provided on the informational page. If none of the products displayed on the screen resemble your View-Master, ensure that the product is not listed in the "Stereo Viewers" section provided near the bottom of the page.
Review the detailed product information contained on the model page in order to find an approximate manufacture date. Because many of the View-Masters were produced over a number of years, it is often only possible to establish a date range and not an exact date. However, the exact date of manufacture for some specialty View-Masters is available as they were produced for specific events over a very short period of time.