Seiko caliber 6R15 - the heart of many great watches - Strapcode
WTS] SEIKO SARX015 - 6R15 Mov't, Sapphire, Display Case Back, Signed Crown, Tapestry Dial. They don't make them like this anymore! | WatchUSeek Watch Forums
SEIKO AUTOMATIC MOVEMENT NE15 FOR SARB MODELS 6R15 REPLACEMENT – ASA College: Florida
Seiko Caliber 6R15 Watch Movement | Caliber Corner