Sandsteel Watch Mainspring Manual featuring Sandsteel & Sandalloy - reprint

Sandsteel Watch Mainspring Manual, catalog of Sandsteel and Sandalloy mainsprings for watches from the Sandsteel Spring Division of the Sandvik Steel Co of Fair Lawn NJ, 8 1/2" x 11", 82 pages, catalog was probably from the late 1960's, reprint. Very comprehensive covering Swiss Pocket and Wrist Watches only (no American Watches) including the Sandalloy line of alloy mainsprings. This reprint has been augmented with a special goldenrod section at the back not available in the original catalog that lists the mainsprings by part number so you can find out what a Sandsteel mainspring is made to fit since they didn't write it on the mainspring envelope. I'm not super impressed with some of the toner overprinting on several pages but otherwise the quality is fairly good. This is a difficult catalog to find. Images do a suitable job of representing the item.