{"product_id":"hamilton-factory-dynavar-mainspring-for-20-0-21-0s-hamilton-no-36434-alloy","title":"Hamilton Factory Dynavar Mainspring for 20\/0 \u0026 21\/0s Hamilton No. 36434 - Alloy","description":"\u003cp\u003e\u003cstrong\u003eHamilton\u003c\/strong\u003e Factory \u003cem\u003eDynavar\u003c\/em\u003e Mainspring for 20\/0s \u0026amp; 21\/0s Movements, Catalog No. 36434, alloy, new in envelope. Made for Grades 995, 995A, 997 \u0026amp; 721, and perhaps others.  See image for precise characteristics. I likely have several of these so the one you get may differ slightly from the images.  I specialize i\u003cspan style=\"font-size: 14px;\"\u003en hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. \u003c\/span\u003eImages do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Hamilton","offers":[{"title":"Default Title","offer_id":47452027191604,"sku":"PMA-HAM36434A-09","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/1156604330.jpg?v=1705280378","url":"https:\/\/www.vintagetimeparts.com\/products\/hamilton-factory-dynavar-mainspring-for-20-0-21-0s-hamilton-no-36434-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}