1979 and 1980 Zenith 19" color sets

[Adam]

That's weird, I remember that digital clock being on top of the System 3 the last time I looked at the picture. Anyway, that makes sense about the clock, because the shape and color of the numbers look similar to that on a 1980 Realistic clock radio I have, and I think Realistic and Micronta are both names Radio Shack put on their stuff.