{"product_id":"tru-time-mainspring-for-gruen-98-99-835b-steel","title":"Tru-Time Mainspring for Gruen 98, 99, 835B - Steel","description":"\u003cp\u003e\u003cstrong\u003eTru-Time\u003c\/strong\u003e Mainspring for \u003cstrong\u003eGruen\u003c\/strong\u003e caliber 98, 99, 835B and perhaps others as well, steel, new in envelope. See images for precise mainspring specifications. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Tru-Time","offers":[{"title":"Default Title","offer_id":49156771414324,"sku":"PMS-TTM9899S-06","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-06-1118.54.15.jpg?v=1781229395","url":"https:\/\/www.vintagetimeparts.com\/products\/tru-time-mainspring-for-gruen-98-99-835b-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}