Very tough to find GRAY diamond CD 190 – 191 two piece transposition insulator. The top piece has a flat chip that removes about 1/3 of the first row of threads. This doesn't affect the display and a pin will still thread in. The base has some nice milky swirls throughout. Base damage includes some minor flakes at top / pinhole opening, ½" open base bubble and a ½" flat flake off the inside edge of the base. Tough colour to find – displays great. Price is $150.00 which includes shipping