{"product_id":"marco-mainspring-no-3019-for-langendorf-caliber-642-steel","title":"Marco Mainspring No. 3019 for Langendorf caliber 642 - Steel","description":"\u003cp\u003e\u003cstrong\u003eMarco \u003c\/strong\u003eNo. 3019 steel mainspring for Langendorf (Lanco) caliber 642 \u0026amp; Blancpain \/ LeCoultre caliber 52 movements perhaps others as well, 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":48733035888948,"sku":"PMS-CEM3019S-07","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-07-2417.06.45.jpg?v=1753406181","url":"https:\/\/www.vintagetimeparts.com\/products\/marco-mainspring-no-3019-for-langendorf-caliber-642-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}