{"product_id":"pm-mainspring-no-91-for-as-caliber-984-1002-1158-1187-1194-onyx-steel","title":"PM Mainspring No. 91 for AS caliber 984, 1002, 1158, 1187, 1194 - ONYX Steel","description":"\u003cp\u003e\u003cstrong\u003ePM \u003c\/strong\u003eONYX steel mainspring No.91 for AS caliber  984, 1002, 1158, 1187, 1194 movements and quite likely others, new in envelope. See images for precise mainspring specifications. 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":"PM","offers":[{"title":"Default Title","offer_id":49169554112820,"sku":"PMS-PMMS0091S-07","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-06-2218.41.10.jpg?v=1782178993","url":"https:\/\/www.vintagetimeparts.com\/products\/pm-mainspring-no-91-for-as-caliber-984-1002-1158-1187-1194-onyx-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}