{"product_id":"ronda-mainspring-no-387-for-eta-caliber-1045-eterna-caliber-1050-alloy","title":"Ronda Mainspring No. 387 for ETA caliber 1045 \u0026 Eterna caliber 1050 - Alloy","description":"\u003cp\u003e\u003cstrong\u003eRonda \u003c\/strong\u003eNo. 387 Ronda-Flex Alloy mainspring for 5¾ ligne ETA caliber 1045 \u0026amp; Eterna caliber 1050 movements and perhaps others, new in open 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":"Ronda","offers":[{"title":"Default Title","offer_id":47452868477236,"sku":"PMS-ROND387A-07","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/3859203545.jpg?v=1705296480","url":"https:\/\/www.vintagetimeparts.com\/products\/ronda-mainspring-no-387-for-eta-caliber-1045-eterna-caliber-1050-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}