747 "Classic" ?

From:         astracon@aol.com (Astracon)
Organization: America Online, Inc. (1-800-827-6364)
Date:         12 Apr 96 02:11:27 
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In a recent conversation with someone from Virgin Atlantic the gentleman
referred to the airline's 747-200's as 747 Classics.  This is a new term
on me and I was wondering what its origin is and if it is used