#D-18126648. The D-18 gives you the classic Martin guitar experience, with a dreadnought body, a 14-fret design, solid Sitka spruce top and mahogany back. Original neck set, original bridge set, new bridge plate, shaved bridge minor enlargement. original tuning machine. LR Baggs Microphone/Undersaddle Acoustic Guitar Pickup included (not wired). Steel strings. All work done by JC Baxendale handmade guitars. Size: 41" x 15.5" inches. Condition report: the top has superficial pick scratches, otherwise good condition. No other apparent damage to the wood, no bending, strong projection, clear balance voice, holds tuning well.