The reset signal on this one is in the shape of a star. You can't see it but this model has a pendant set knob. Available in red, blue, slate blue, grey, black, yellow and tan. This was a really big seller and they're still pretty common.
Telechron Repair Tip #14:
Better than New?
The 2H21 wasn't a bad clock, it's just built that way. The plastic crystals routinely cracked but they can be replaced with glass--better than new! The staked movement makes it impossible to clean without a little modification. Fortunately, tapping for screws is not only easy, it's also rewarding and when it's done, you can think of your clock as better than new. Follow me and I'll show you how simple this is...
Once you get the dial off,
you're greeted not with three nickel-plated 4/40 screws but with these little rivets. Just whack those off with a Dremel Tool with a grinding attachment. (Don't forget your eye protection!)
Do a careful job and you should end up with something like you see above.
Once the plate is off, tap the posts for screws. You can pick up the 4/40 tap and handle at any good hardware store. Above all else, avoid breaking the tap off in the post. I use grease to lubricate the tapping. Make no more than three cutting turns, then back the tap out. If you break the tap off, you'll go through 40 drill bits trying to get out. (Don't try.) One of those posts is nearly always solid. (Not on the clock above as it turned out.) Don't try to tap through solid aluminum, use a 3/32" drill bit to make the hole. The hard part is finding 4/40 shallow pan-head screws. I bought 1000.
Of course, it's really hard to ever perform a perfect restoration, let alone make something better than new. The pic below shows the scars, tragically found on most plastic clocks from this era. Rubber cords are not compatible with this case. The clock must have been displayed with the extra cord wrapped wound the rear (this was what Telechron recommended) and you can see where it dissolved into the case.