John Koehler (USA)
#9 Polnia model finished in 2020Top made of western red cedar
Back, ribs, and neck made of black walnut
Flat back with modified X brace
41.25” string length, D neck.
Rib height @ neck 6 1/4”
Rib height @ end pin 8 1/2”
Body length 43 3/8”
Upper bout width 19 1/4”
Lower bout width 26 1/4”
https://johnkoehlerbasses.com/
