Fret nut, Pardon my 2 week response time. Since my DR-28C is the only Sigma I've handled or seen, I can't ID any custom features. To answer your question, no, it has no abalone purling or inlay. I asked a few of my friends if they thought anything about its construction was other-than-expected. Nothing seems truly unique. I got several positive comments about the materials. It's a solid, tight-grained Sitka top with rosewood back (2 piece) and sides. The Yamaha, Strat and Taylor owner likes the volume and looks. The Yamaha and Simon&Patrick owner says it plays really nicely, it's pretty, and louder than both his 6 and 12 string S&P's, which have the satin finish. Someone made a comment about how nice the tuners feel. Oh well, the "C" designation remains, for now, a mystery. Dana
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