LeCoultre Factory mainspring for caliber 438 - Alloy

LeCoultre Factory Mainspring for caliber 438, alloy, new in package. The wonderful thing about factory mainsprings is they always fit. The package contains just the one (=1/12 dozen). 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 suitable job of representing the item.