Wood Dubonnet advertising sign

My inlaws purchased their home from a man in the 1950's that owned a liquor store and they had this Dubonnet item above their bar from then until when their home was sold in 2004. When my husband and siblings were clearing out the house and donating items I saved this little sign as we would gather (in the den where this was) as a family each Christmas until his parents died. The sign reminds me of those family gatherings and happy times spent when our kids were very small. The measurements are 11" wide by 3" deep and about 12.5 inches tall. It is made all of wood and painted. I was curious about the piece and looked online but could not find any other Dubonnet advertising item in wood that looks similar. I was wondering if anyone knows how old it is or anything about it? I love the piece and each time I look at it I remember the happy times together, which is why I saved it.