DeWalt Radial arm saw a good purchase?

[Randal Stevenson]

The motor is powerful and spins for a few minutes after I turn the saw off. The motor is missing the reset button and something else, look at the pictures and see if you can give me any advice.

I wonder if it has been rebuilt once?

Besides the reset button, the motor is missing its on/off toggle switch. I believe the GW or GWI series was the only model to have that feature.
Check out Delphi forums Dewalt radial arm saw group. It is the same bunch as the Yahoo DeWalt group, and besides OWWM (already saw your pictures there), the best chance to find one (I know of one other person looking).