early vintage NATIONAL ASSOC. OF STATIONARY ENGINEERS enamel collar stud ~ 1892 For Sale

The early vintage NATIONAL ASSOC. OF STATIONARY ENGINEERS enamel collar stud from 1892 is a collectible advertising piece originating from the United States. This unique item showcases the theme of advertising and is a rare find for collectors interested in pinbacks and lunchboxes. The enamel collar stud likely served as a promotional item for the National Association of Stationary Engineers, making it a piece of history with both practical and nostalgic value.