TV shop sign

Here is a question for the folks here. I have collected radios and worked on them since the 70s. Some of the reasons I got into them were I was going to school on electronics and they were cheap to find. Another reason I lived in a rural area and I had nothing to do. So I would go out to the repair shops and shoot the bull and learn a lot from the older guys who owned the shop. I was able to get truckloads of parts,tubes,books,manuals and other junk. I have a almost complete shop, basically a museum if you will. I am planning to do a major overhaul of my shop and want to set it up better. I want to display a lot of the stuff I have and such as a dedication to these guys.

Now on to my question. The few things I never got but wish I had was a TV sign they would have outside or on a pole,etc. The other was the little ads they would put on stuff. The cardboard or metal signs saying how good they were. My question is what is the going rate of this stuff. I would even settle for a plastic sign insert that went into the frame as I could build a box for it to sit in.
But being new to prices since I have been away I am not sure of the value. The prices of this stuff varies a lot from what I see on ebay and I haven't seen what I want yet. I let a lot of this stuff get past me. In the town where I live a old store had a original westinghouse stand from the 50s I let get past me. Anyway anyone know of what a sign might bring? I have the only advertising I have to be stuff I printed off the internet.