I came across this locally, it's for sale and I haven't bought it yet. It looks like it is has been signed by the following cast members:
John Schneider (Bo Duke)
James Best (Rosco)
Ben Jones(Cooter)
Rick Hurst (Cletus Hogg)
Sonny Shroyer (Enos)
Byron Cherry (Coy Duke)
and I can't make out the name below the grill. They are wanting $40. Thoughts on authenticity?