Hello friends. I make the occasional cigar box Uke and I remembered seeing one of the kamaka brothers playing one on that PBS special last year. When the googled it I found this link with some background on them. There is even a sound sample video. I'll post the link below. Anyway I thought you ukulele crazies might enjoy checking it out.
http://ukulelefriend.com/ukes/vintage-kamaka-cigar-box-ukulele/
Trevor
http://ukulelefriend.com/ukes/vintage-kamaka-cigar-box-ukulele/
Trevor