CHANNEL MASTER AM TRANSISTOR PORTABLE RADIO MADE IN 1959 - 1968 LOOKS LIKE DURING THAT TIME SOMEONE LEFT IT NEAR WARMTH , CAUSE REAR COVER BOWED SOME HOWEVER MAIN BOARD LOOKS REALLY GOOD AS-IS SALE WORKS WELL.LOOK AT PIXS TOOK WELL OVER A DOZEN.I USED 9VOLT BATTERY DUE TO BATTERY TRAY CORROSION.