I don't recognize the pattern.
I'm floating the tattoo number out to a couple of my contacts to see if they know what kennel he might be from.
SG2 CAC Discoe vom haus Huro, BH, AD, CD, CGC, HOT, OFA-Excellent, CERF
RIP Reba von Treue Freundschaft, CGC, TDI
May 11, 2005 - May 23, 2013