The Antique P.H. Doret Pocket Watch issued by the BL Straburger co - Trademark Feb 17 1891. with unique Chain is a vintage piece from the late 19th century, making it a unique and historical timepiece for any watch enthusiast. This mechanical (manual) pocket watch belonged to my great uncle. I don't know much more about it, but I thought it was kind of unique with the old chain attached.