Martin made quite a few “custom brand” instruments for the Wurlitzer music store chain beginning in 1922. Although some had a special single-ring rosette, others were standard Martin models but with the Wurlitzer stamp on the back of the headstock, and this 000-18 falls into that category. It was clearly intended for steel-strings, and the top bracing is nearly identical to Martin 000 models from the late 1920s. Here’s the condition report: Original finish on back, sides, and neck. The top still has the original finish, but it has been French polished (the guitar had a large aftermarket pickguard that was crumbling, so we made a new pickguard and touched up the scars outside that shape left by the old guard). Neck reset and refret by Gryphon, along with a replica pyramid bridge. Tuners are old, but seem plainer than the originals should have been. No top cracks, two short tight cracks in the back that have been repaired, same story for the lower side. The finish is in good condition, but with lots of small dings and light scratches, and a few deeper ones. A very powerful sounding guitar, and steel-string Martins this early, especially in the 000 size, are hard to find.