{"product_id":"marco-mainspring-no-3030-for-benrus-ay-and-eta-980-movements-steel","title":"Marco Mainspring No. 3030 for Benrus AY and ETA 980 movements - Steel","description":"\u003cp\u003e\u003cstrong\u003eMarco\u003c\/strong\u003e Mainspring No. 3030 for Benrus caliber AY and ETA caliber 980 movements, steel, 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":"C \u0026 E Marshall","offers":[{"title":"Default Title","offer_id":48898270003508,"sku":"PMS-CEM3030S-09","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-09-1914.35.20.jpg?v=1758317872","url":"https:\/\/www.vintagetimeparts.com\/products\/marco-mainspring-no-3030-for-benrus-ay-and-eta-980-movements-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}