| Top: | All Solid Hawaiian Koa |
| Back & Sides: | All Solid Hawaiian Koa |
| Binding: | Maple Body on Top & Back |
| Fretboard & bridge: | Hardwood |
| Inlays: | Maple Ornament Inlay at Bottom of Top Body 7-ply Black & White Top Purfling 3-ply Black & White Back Purfling 11-ply Black & White Soundhole Rosette 7-ply Black & White Stripe Down Center of Fingerboard |
| Fret Markers: | Pearloid Position Markers (Double Markers Each) at 5th, 7th & 10th frets Side Markers at 5th, 7th & 10th fretsPearloid Position Markers (Double Markers Each) at 3rd, 5th, 7th, 10th & 12th frets Side Markers at 5th, 7th, 10th & 12th frets |
| Tuners: | Gotoh Friction |
| Nut & Saddle: | Bone |
| Finish: | Vintage Satin |
| Frets : | 12 Frets to Body; Total 17 Frets 14 Frets to Body; Total 18 Frets |
| Strings: | Aquila |
| Electronics: | N/A |
Concert CK-390:
Scale Length = 15”,
Body Length = 10-7/8”,
Overall Length = 24”,
Upper Bout Width = 5-3/4”,
Lower Bout Width = 7-3/4”,
Body Height = 2-3/4”,
Overall Height = 3-1/4” (including bridge & saddle),
Nut Width = 1-3/8”











