I saw a video of James Alexander playing a 59 recording with Isaac Hayes on the HBO Stax: Soulsville USA documentary. BIG sound, 3-tone burst, gold guard, rosewood board. I knew that bass right away.
Here's a pic of my CS '59, one of my favorite looks.
Very likely the same bass Duck Dunn had used (i.e. in the clip below) as Duck's son, Jeff, said he had lent that bass to Alexander and had assumed it was lost in the Otis Redding plane crash and never followed up on it. Duck's maple neck 3-tone, gold guard was also a '59 (Duck thought it was a '58 but Jeff pulled the neck to confirm).


