This two piece CD 190/191 is called just that--TWO PIECE TRANSPOSITION and is dark aqua in color with a large bubble in the 191 piece, as well as several other smaller ones; and interesting to note, for those who collect odd-ball insulators, the "A" is missing the horizontal cross piece, so it looks like a "V" was used when they couldn't find the "A" letter. The bottom piece (190) has a tiny-tiny ding on the rim, but otherwise the two pieces are in excellent shape. They're connected with a short wooden peg that isn't the correct one, but it works for the most part.

Books at $30 and I will take $20 plus postage.