This is a collectible sign from the Republican National Convention in Kansas City in 1976. Crown Center refers to one of the local hubs in Missouri in which the convention was centered. 

Political Spirit 76 ABC News refers to the national broadcast at the time. 

The meaning of "Antelope 1" is unknown. I believe the entire sign was used as part of the production of the broadcast of the convention, but I am unsure.

One buyer has reached out and said that Crown Center was where the Michigan delegation stayed during the convention, and that "Antelope 1" may have referred to one of the ballrooms in Crown Center.

It is in great condition.

It is roughly 14''x19'' in size.