Check out this super-cool D-X hanging neon sign from the 1946-57 era.
Another unusual one... Here's a 3-D stamped porcelain D-X sign. Look closely at the sign on the pylon of this building:
Here's a good picture of the diamond-shaped portion. The 3-D stamped letters mount to the center of it on some steel strap-like brackets.
photo: Scott Shipers
If anyone has a better photo of a complete one, please feel free to post it!
[This message has been edited by thermactor (edited 06-20-2007).]