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Old 25 October 2018, 02:30 AM   #8
opzxkl
"TRF" Member
 
Join Date: Feb 2014
Location: TRF
Posts: 32
Quote:
Originally Posted by springer View Post
GMT 1675s all had red backs with red backs continuing through the end of the matte-dialed 16750s. It might be possible to find late 16750 mattes with blue backs - I can't say for sure - but, based on my experience, 1984 seems to be the time frame for the arrival of the blue backs with some time for transition between the two.
Slightly heartbroken now after taking out the insert on my 1675 and seeing a blue back. Lol.
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