{"product_id":"hr-ev-r-last-mainspring-e545-for-marvin-520-535-aurore-42-bulova-13af-steel","title":"HR Ev-R-Last Mainspring E545 for Marvin 520, 535, Aurore 42, Bulova 13AF - Steel","description":"\u003cp\u003e\u003cstrong\u003eHR \u003c\/strong\u003e\u003cem\u003eEv-R-Last \u003c\/em\u003eM\u003cstrong\u003e\u003c\/strong\u003eainspring E545 for Marvin 520, 535, Aurore 42, Bulova 13AF, 13AL, 13AN \u0026amp; 13AT caliber movements, 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. all calibers supported and\u003c\/p\u003e","brand":"HR","offers":[{"title":"Default Title","offer_id":47452865757492,"sku":"PMS-HREVE545S-09","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/products\/3848994000.jpg?v=1705296386","url":"https:\/\/www.vintagetimeparts.com\/products\/hr-ev-r-last-mainspring-e545-for-marvin-520-535-aurore-42-bulova-13af-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}