Which sub model is this 1973 Commando

Wow, correction . Closer inspection of tag on neck shows oct 72. Also found a C on the head under the engine steady.
 

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So looks like a 1972 Commando Combat. Research shows the issue with the main bearings. Unknown miles. Have to decide to either prep it for a start, been stored for years , or start a rebuild.
 
Daytonachuff said:
Wow, correction . Closer inspection of tag on neck shows oct 72. Also found a C on the head under the engine steady.
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OK, that's better. It's a 1972, not 73 probably not a real Combat. Service Release N3/23 appears to say that 211110 was the last Combat (or first after Combat) yours has too high a serial number. However, sometimes they did not pass inspection and were later finished so it's possible. AFAIK there's no way to be sure because the 72 dispatch records did not specify much more than the date and serial number. So, maybe the head was changed, maybe they used up an existing head, maybe it was finished later.

BTW, the follow on RH6 heads were basically the same but only skimmed .020" not .040" so after the Combat, there was the high-performance version but AFAIK, it was not marketed that way - not sure.

Does the certification label (red label) serial number match the engine and gearbox numbers?
 
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