{"product_id":"pm-onyx-steel-mainspring-for-font-caliber-175-176-benrus-caliber-ar-at","title":"PM ONYX Steel Mainspring #78 for Font caliber 175, 176, Benrus caliber AR, AT","description":"\u003cp\u003e\u003cstrong\u003ePM \u003c\/strong\u003eMainspring No. 78 for Font caliber 175, 176 \u0026amp; Benrus caliber AR, AT movements plus perhaps others as well, ONYX steel, new in envelope. See images for further data and 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":49128377712948,"sku":"PMS-PMMS0078S-05","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-05-1515.31.01.jpg?v=1778884456","url":"https:\/\/www.vintagetimeparts.com\/products\/pm-onyx-steel-mainspring-for-font-caliber-175-176-benrus-caliber-ar-at","provider":"Vintage Time Parts","version":"1.0","type":"link"}