Conn Director numbers

[bigbandbone]

What are all the different model numbers of the Conn Director Trombone and why did Conn keep changing them? Also, did the Director stay a .485 bore throughout all these model designation changes?

[BGuttman]

The Director started as 0.485" and then became 0.500". I'm not too sure when the change occurred.

The Conn Loyalist site will have a lot of the older Director numbers with specs. The ones I know of were:

14H 0.485"
18H 0.485" with Coprion bell
22H 0.500"
23H 0.500"
27H 0.500" (Made in China?)

[bigbandbone]

Thanks!