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Old 01-01-2008, 12:13 PM
azmick azmick is offline
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Join Date: Dec 2006
Location: Rainbow Valley Arizona
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When was the transition from "S"-prefix to the three-letter-prefix done for the Model 28-3's?
the "N" prefix started about 1969,that would be a 28-2. 28-3 started about 1982. the "N" prefix ended about 1986. the HP was discontinued in 1986 but there are some with a 3 letter prefix
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