???  look at ebay## 260562539745. what IS this?? doesnt look like any SW i have EVER seen!!! bulova type screw ring back retainer ring, weird to say the least!   JON

hey Jon take a look at this thread, started by yours truly.

http://www.vintagezodiacs.com/zforums/index.php?topic=421.0

thats the first black dial one I've seen, but looks like a slightly later variant with the Seawolf name finally coined.  Seconds hand is a replacement but legit in all other respects.  A missing link on the Seawolf lineage chart.  If it goes for a good price, might put mine up on the bay, missing crown but runs smoothly when shook. 

DAVE---tks for the info. was this model later than the SW we all know and love? the black dial lume looks kinda bad,wonder if they came from the factory like that. i have some old 50s/60s bulovas with this "thick" type lume--wonder if it is radium? i learn something new here every day. this one is really a missing link--i missed it until now. JON