Up for your consideration is a 6309-7049 from November of 1978. Everything does what it should. Crown screws down with three finger rolls and bi-directional bezel clicks when rotated. Date changes across midnight. Crystal is scratch free. There are some dings in the case but is unpolished and factory brushing is still visible. A beautiful example that has aged as a 6306-70xx would with nice custard patina on markers. This watch comes on a new Uncle Seiko GL831. Service history unknown but is keeping good vintage time.
Asking $475 OBRO (includes shipping). PayPal only and no fees to me.
PM me with any questions you may have. I have bought and sold multiple watches on WUS with positive feedback.
Thank you WUS!