Ronda Mainspring No. 452 for Aurore 39 and Tissot 13.6 based calibers - Alloy

Ronda No. 452 Ronda-Flex Alloy mainspring for Aurore caliber 39 & Tissot 13.6-1T, 13.6-21T caliber movements and perhaps others, alloy, 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.