{"product_id":"vintage-1940-cyclopedia-for-jeweler-watchmaker-optician-nelson-hall-co-booklet","title":"Vintage 1940 Cyclopedia for Jeweler Watchmaker Optician Nelson-Hall Co. Booklet","description":"This privately printed booklet is a fascinating look into the practical trade secrets and manufacturing formulas of the early 20th century. It provides detailed technical data, including:\u003cbr\u003e\u003cbr\u003eAlloys: Precise formulas for various metal compositions, including gold, silver, bronze, and aluminum alloys.\u003cbr\u003e\u003cbr\u003eTrade Processes: Specialized information on anti-oxidizers, blackening techniques for metal, and instructions for delicate tasks like mounting diamonds.\u003cbr\u003e\u003cbr\u003eHistorical Context: A must-have for historians of the jewelry and watchmaking trades, or collectors of vintage trade literature.\u003cbr\u003e\u003cbr\u003eCondition \u0026amp; Details\u003cbr\u003e\u003cbr\u003ePublisher: Nelson-Hall Co., 321 S. Wabash Ave., Chicago.\u003cbr\u003e\u003cbr\u003eFormat: Vintage softcover technical manual.\u003cbr\u003e\u003cbr\u003eCondition Notes: The booklet shows expected age-related wear consistent with its vintage nature. The interior pages are clean and legible, containing a wealth of technical information. The front and back covers feature the classic branding of the Nelson-Hall Co. The final pages of the booklet include advertisements for other self-instruction texts available from the publisher at the time, such as \"Short-Cut Mathematics\" and \"Learn How to Hypnotize.\" Please refer to the provided photos to review the physical condition of the booklet.\u003cbr\u003e\u003cbr\u003eThis is a unique opportunity to own a piece of industrial trade history. If you have any questions regarding this item, please feel free to message me!","brand":"The Vintage Paper Vault","offers":[{"title":"Default Title","offer_id":58748427600032,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1056\/6284\/0992\/files\/cae1fcf4-9960-4ba3-b862-b2a981d26089.jpg?v=1787275128","url":"https:\/\/vintagepapervault.com\/products\/vintage-1940-cyclopedia-for-jeweler-watchmaker-optician-nelson-hall-co-booklet","provider":"Vintage Paper Vault","version":"1.0","type":"link"}