Jaeger Lecoultre 838 839 895 movement holder , diameter 27.5mm
also for IWC 1852 , Audemars Piguet 2090 and Vacheron Constantin 1015
Porte-mouvement pour JLC extra-plat, diamètre exterieur 27.5mm
External diameter : 27.5mm
Internal diameter 20.80mm
Thickness : 1.65mm
Pre-owned / pre-used