Good question, I would like to know the answer too, if anybody can help...
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Stephen, #301111 came with a round one.
John
We have it surrounded! 302470 has the "T" handle.
Guess I should have mentioned, 301976 has the round knob.
Getting closer on the knob. Between #301976 and #302470
John
#302580 has a T handle.
John Straub took this photo at the 2014 Monterey Parade. . .
this is as close to a "Rosetta Stone" as we get having just scanned the last 43 pages of this thread. . .
http://www.early911sregistry.org/for...8&d=1403807395
More fuel for the fire...