Did your state ever use button copy on your logo service signs? Or are any still standing as of today?
They typically aren't maintained by the state DOT and some of them look god awful mismatched together.
I know WV and CT used it and I think OH did too.
(https://live.staticflickr.com/65535/50996603068_6f2f5b223a_c.jpg)
Oklahoma used button copy everything back in the day. The service signs were the last to be replaced, but as far as I know all of them are full retroreflective now, too.
I'm pretty sure there are some on the Indiana section of I-94.
Arizona definitely did. There are still a few out there in very rural parts of the state. Most of those installed near cities have been replaced.
Still a few in West Virginia.