{"product_id":"cas-ker-mainspring-3511r-for-eta-735-bulova-7ap-ah-ak-an-alloy","title":"Cas-Ker Mainspring 3511R for ETA 735 \u0026 Bulova 7AP, AH, AK, AN - Alloy","description":"\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cstrong\u003eCas-Ker \u003c\/strong\u003eMainspring 3511R for Bulova 7AP, 7AH, 7AK, 7AN \u0026amp; ETA 735, 757 caliber movements plus perhaps similar ébauche watches, likely made by Bestfit, white alloy, new in package. I likely have several of these so the envelopes may differ slightly from what is shown in the images. See images for precise characteristics. 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\/span\u003e\u003c\/p\u003e","brand":"BESTFIT","offers":[{"title":"Default Title","offer_id":48557193494836,"sku":"PMS-CKM3511RA-04","price":12.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-04-1913.24.05.jpg?v=1745094410","url":"https:\/\/www.vintagetimeparts.com\/products\/cas-ker-mainspring-3511r-for-eta-735-bulova-7ap-ah-ak-an-alloy","provider":"Vintage Time Parts","version":"1.0","type":"link"}