$OLD Neat Hi-Plane Tobacco sign w/ Graphics

Neat Hi-Plane tobacco sign featuring a graphic pack of smokes on the left with plane. The back of this sign is maroon with white streaks (similar to stout signs). I have been told that the gray back is reproduction and have been told that this version is a reproduction. To be honest I'm not sure so I am selling this sign as "age unknown". If you know how to tell the difference let me know and I can update this listing.