I picked this one up last year and finally got a halfway decent picture of it. It's an all original Seiko 7548 quartz diver from May 1978. The seller said it had been sitting in a drawer for a long time and the condition shows it hasn't been worn much. It wasn't running when I got it, but fortunately the original battery didn't leak so all I had to do was replace it (and the gaskets) and it was ready to go.
edited to fix picture links