Does the mic on David Letterman’s desk on The Late Show actually work or is it just a prop?

From here:

Yes, the microphone (an old RCA DX 77) does work, but is usually reserved for special occasions, such as when Dave is “playing along with the band” by hitting it with a pencil. The crew at NBC gave him the mic when he left. Dave’s primary mic is the wireless “tie-clip” variety. There was a report that Dave’s mike was stolen off his desk during the renovation of the Ed Sullivan Theater in the spring of 1996, but I can tell no difference in the replacement.

And there you have it. One of late-night television’s greatest mysteries has been answered!

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