I agree with Robert April, that those were not the proposed phasers. Look at them--they all have different colored lenses. There's no reason the weapon would have those kinds of variations. What they're holding in the publicity photo was meant for that shot only. Back then, color was still relatively new, so trying to capitalize on showing off the spectrum was on people's minds (that's why the 3 section uniforms are distinctly different colors, in addition to being discernible on black and white TV's). Holding flashlights was a really stupid idea. They already had the 1st pilot "Cage" props... they should have used the phaser pistol and communicators from the pilot, at the very least.
What I'll never understand is why Mego made those phaser atrocities back in the early 70's. They were a complete joke. And they distorted them in the wrong way--if anything, they should have been smaller, for the smallish hands of the kids who'd be playing with them. And then you have AMT, who made that crappy Exploration set. Now there they had the right idea of miniaturization... but they were so inaccurate. Plus the communicator hinge was poorly designed, which would break off in no time.
What I'll never understand is why Mego made those phaser atrocities back in the early 70's. They were a complete joke. And they distorted them in the wrong way--if anything, they should have been smaller, for the smallish hands of the kids who'd be playing with them. And then you have AMT, who made that crappy Exploration set. Now there they had the right idea of miniaturization... but they were so inaccurate. Plus the communicator hinge was poorly designed, which would break off in no time.