I have a Gruen Precision Autowind Ocean Chief missing the bezel. It's been sitting at my watchmaker since June while
as he sources a bezel. It was already running but in the meantime it's fully serviced as well + new crystal and leather nato band.
These pics when I first got it at home, then I took one when my watchmaker opened it. It's 560RSS.
ONLY contact me if you are FIRMLY interested in buying the watch without bezel, and I can arrange to go pick it up and take new pictures for you...my asking price is US$2850 or reasonable offer.
I have posts on WUS but not sold anything yet but I have positive feedbacks and active on Ebay as user montlubin.