CD Number Changes Effective November 1, 1972

Reprinted from "INSULATORS - Crown Jewels of the Wire", December 1972, page 16

The development of the CD numbering system has extended over the past 20 years. Because at the outset it was not anticipated that so many distinct styles would be found, the system has suffered from growing pains, especially within the last five years. About four years ago the "400 series" was added to accommodate new items in the single and double petticoat side-tie classes. Now, even the "400" numbers have been exhausted in certain areas. Therefore, in order to allow for continued expansion while keeping the various items in as nearly as possible a logical sequence, it has been decided to change to a decimal system. None of the original numbers has been disturbed. Numbers 400 and above have been re-numbered to fit into suitable places.

It is regretted that some inconvenience will be caused by this change; but it is considered best in the interest of long-term efficiency.