I don't find that exact model, but most (perhaps all) Panasonic DVD-VCR combos use setup code Video 1462 (or the similar 1762) for remotes made by Universal Electronics.

Maybe you already own a suitable remote. The Comcast silver remote with a red OK/Select button has these codes, as does the Atlas remotes supplied by a variety of cable companies. Higher end Vizio remotes will work, Radio Shack 15-100/133/134/135, Cox cable 7820B, OneForAll URC 6820/8820/10820/6131, many Motorola.

I thnk the RCA RCRP05B is likely to be cheapest if you have to buy a remote.