Here's a rarely seen or offered U-1929 porcelain two piece dryspot insulator from New Zealand. The porcelain pin has a canal channel that goes over it, providing a spot for the wire to be held protecting it from moisture (how it gets the name dryspot).

Has some wear on the inside threading and a chip on the right top side of the inner porcelain pin (seen in pics) and 3 tiny glaze tic marks. Dome embossed: NZI A.

First email gets this scarce dryspot patterned after the early Sinclair Aiken patent from England for the reduced price of only $260 shipped. Thanks!