Seiko 6347-5000; Automatic Moonphase – Provenance Watches(04) Prof. Cruz Hirthe 22 Jun 2025 Save Image Image gallery: Seiko 6347-5000: Unearthing a Hidden Gem of Vintage Horology
![[WTS] Seiko 6347-5000. Released in 1986, and still the only Automatic](https://cdn.watchcharts.com/listings/4bebcf85-20c9-4324-a969-79706fd7ec9c.jpg "[WTS] Seiko 6347-5000. Released in 1986, and still the only Automatic")
![[6347-5000] Moonphase : Seiko](https://preview.redd.it/6347-5000-moonphase-v0-bgwrrg8shdz91.jpg?width=1080&crop=smart&auto=webp&s=226a8e75f19154fabd0dcbe9ebd01acc9288ddd4 "[6347-5000] Moonphase : Seiko")
![[6347-5000] The first Automatic Moon-phase from Seiko : Seiko](https://preview.redd.it/6347-5000-the-first-automatic-moon-phase-from-seiko-v0-aa3tdg9vjfnb1.jpg?width=1080&crop=smart&auto=webp&s=a96ca8f7a82831ee8e9744c3dbdaf74ed45a1cfe "[6347-5000] The first Automatic Moon-phase from Seiko : Seiko")