[Case12]

If original, certain this is a self wind mechanical. If its battery or replaced batter guts, I wouldn't guess it to be worth much. It is missing the stem to set time and self wind as already noted. The band is the right time period. There is probably more novelty in the watch as a whole, than the watch working. But people always ask 'does it keep time' even if they never plan to wear it. There are some old watch guys out there that would charge $50 -$100 bucks to get it working. In summary, I would think of this watch as a period novelty. There are quite a few out there. Cool to have one.