SGC Started operations in (I believe) April of 1998. That slab is is the 1st Official SGC Slab and was discontinued in January of 1999. I think I have the correct history of SGC Slabs as follows :
(1) SG on the front Pre 1999
(2) SGC on the front minus 1-10 grade 1999 thru 2004
(3) SGC on the front plus 1-10 grade plus gold label on the back 2005 thru 2008
(4) SGC on the front plus 1-10 grade plus SGC pressed into the back 2009 thru Current
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Lonnie Nagel
T206 : 224/520 : 42.8%
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