Vintage $1000 Beer sign

I bought this at a Lioness rummage sale years ago (it was on their treasure/antique table). I was going through a few pictures and signs to sort keep and go and I was about to give this one to a friend when I looked it up and was unable to find it except for a similar one selling on ebay for $780.00. It said it was very very rare but the one being sold on ebay did not have the miller seal so I continued searching (with no luck) and only found the one being sold on ebay for $25.00 on another site. I would like ANY information ANYONE has on this item. I did find lots of research on the $1000 beer reward and the story itself now I'm just looking to for information on this sign I have. Thanks so much