Credor “Sakura Fubuki” Raden GCLP989Model: Seiko Credor GCLP989 7R87 0AD0 Sakura Fubuki Year: December 2017 Features: The Complication. Whether were talking about mechanical movements or spring drives, the only high end Seiko movement with a Big Date complication is the 7R87 Credor Spring Drive. And even more surprisingly, there are only a handful of models that even use that movement and theyre all discontinued. The Technique. Raden is a traditional Japanese decorative technique in