I have been told that both insulators are CD 102s.

From what I've been told, this is one of five or six basic Brookfield CD 102 variations, and that this was listed as a CD 102.3 in the old book. Interesting, eh?

Similar insulators are shown here: http://eyecandy.freehostia.com/Page1.html#102X

Thank you to everyone who answered my question;

Thanks to:

Pat Barkwell, Roger Poole, Gene Hawkins & Nathan Woodward

- Chris M Ronayne chrisronayne@live.com.au