LaBelle programmable sign. Keyboard

[Roadhog800]

Have a 1980 something LaBelle 154-LaExpress sign that works but have no keyboard. Is there a keyboard that will work or a place I can get a replacement. Thanks

 

[RetroDen]

I'm guessing 10 years after, you never found a programmable keyboard.
I just purchased one at an auction and paid $75 for a sign and no means of programming it.
Fould two more on line in Hanover MA. Both without a means of programming as well.
UGH