I think LPbolens has one to...Nice Find!
I think this was on ebay a while back but I didnt bid because the guy wouldn't ship it.
This makes the 3rd one I have seen. One I know of is in pristine Condition and I believe it belongs to member JDcrawlers Son....
The sign was most likely offered to dealers in Late 62' Or Early 63' To help promote the New Husky 800.