This post couldn’t have come at a better time for me as I have been studying up on the 1900 AE and the test Eagles. I see more than one TE that’s for sale online that is out of the serial number range but sellers claim they are actually TE’s as they fall in the gray area of serial # range. I have no interest (or wallet) to get a TE but if I was It would have to be solidly in the bonafide serial number range. Thanks for posting all this interesting info!
Jim
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