GOOD OVERALL ORIGINAL VINTAGE  CONDITION - POSSIBLE BUTTON REPLACEMENT OVER THE YEARS (all buttons have same shape but variations in patina/hue).  ORIGINAL TUNER - not a repro! Interesting removal post design!
Need installation and lubrication. 

*String post spacing - 1 3/8", center-to-center

 

*String post spacing - 1 3/8", center-to-center