This lot is a collection of authentic USN Training Aids – View-Master Reels produced by Sawyer’s. The reels feature images related to AA Range Estimation, Bureau of Aeronautics, Special Devices and were used by the Navy during training. The lot is a great collectible grouping for Militaria enthusiasts. The reels were made in the United States by Sawyer’s of Portland, Oregon. Please be sure to expand and read the condition description as there may be condition issues you will want to know about. Also, please be sure to view all the pictures as they are part of the description and may include a ruler for size reference. If you have any questions regarding this item, please feel free to ask! Thanks for your business, hope to deal with you again.