{"product_id":"swartchild-black-shield-clock-open-loop-mainspring-3-00-x-25mm-x-19","title":"Swartchild Black Shield Clock OPEN LOOP Mainspring 3.00 x .25mm x 19½\"","description":"\u003cp\u003e\u003cstrong\u003eSwartchild \u0026amp; Co \u003c\/strong\u003eClock Mainspring, OPEN LOOP End, Dennison 2\/17 x .0098 x 19½, from the 1950's, steel, new in envelope. See images for further details. Envelope suggests spring is suitable for a Westclox Travel clock but I've had no success identifying which one. It is also suitable for several European travel clocks. I specialize in hard to find watch \u0026amp; clock parts and all parts are unconditionally guaranteed. Images do a pretty good job of representing the item\u003c\/p\u003e","brand":"Swartchild","offers":[{"title":"Default Title","offer_id":49095053934900,"sku":"CMS-SWRD302519S-04","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-04-1316.04.38.jpg?v=1776121833","url":"https:\/\/www.vintagetimeparts.com\/products\/swartchild-black-shield-clock-open-loop-mainspring-3-00-x-25mm-x-19","provider":"Vintage Time Parts","version":"1.0","type":"link"}