Sorry, Mike. It doesn't ring a bell. AND I was a TV junkie when I was a kid. I remember most everything I watched during the 70's.
I will say, though, that just because it was on TV does not mean it was popular. Sometimes, a TV campaign is used to try and push a product with no results. (remember, part of Mego's pitch was that they would make their products successful with a great ad campaign).
Also, the some products are only advertised in certain markets. Maybe it was advertised where you grew up (NY stations, right), but not in other places. That might explain why no one else recalls it. I grew up in Philly, so some advertisers would skip us in favor of NY and DC.
WANTED - Solid-Boxed WGSH's, C.8 or better.