A self tipped tie is a finer way to finish a tie. The back of a tie is made of the same tie fabric. Self tipped tie is generally found on the better quality neckwear.
The seven fold tie has no internal fabric because the edges are folded by hand seven times, four on one side and three on the other, before being hand - sewn by tie maker, and its main feature is the increased amount of silk used. Also, when you realize the seven - fold ties are always used silk of the best quality.