This was basically a redesign of the Model 11 (A5 clone), and was one of the fore runners of the 1100....as previously stated, it is recoil operated. Remington made them from 1949 to 1969.
Around here, they are going from about $275-$325 in very good to good condition......that's for 12 gauge models; lesser gauges tend to bring more $$$ (the gun was made in 12, 16, 20, 28, and .410).
If your looking for a good field gun, I wouldn't hesitate.