symptoms of bad coil?

["Tim Gaines" <mtgaines@mail.presby.edu>]

My '74 TR6 recently developed a miss at speed that didn't go away with
new plugs, dwell adjustment, and timing adjustment.  It idles steady at
800 rpm, and removing each spark plug lead causes it to slow, so it
doesn't appear that it is missing at idle.  But at speed it goes flat
with a noticeable miss.  Does this sound like a bad coil?

Thanks for any advice,
Tim

1974 TR6
1980 Spit


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