Sandy Snooper Puppy

Sandy Snooper is a toy battery operated remote control walking puppy with butterfly. It walks step by step, wags tail, barks at butterfly, and turns head. Uses 2 "D" batteries. We have the original box though the box is a little torn. The box says it is an ALPS toy made in Tokyo Japan and distributed by F.W. Woolworth Co in New York. Price on the box is $3.99 it has "DES. REG. NO. 275744. We got this toy from our grandfather's belongings. We cannot find ANY information whatsoever on this toy. We would like to know how old it is and if this is a rare or important item. Also would like to know a value of the toy if possible. Any information would be greatly appreciated! We wander why he held on to this toy! Thanks!