Martin ran a batch of these Custom OM Sinker's and they got scooped up pretty fast. Here's one that shook loose in trade from a good customer of ours. Super clean. Basically an OM-18  with coveted Sinker mahogany back and sides. 

• Materials: Sitka, Sinker Mahogany, Ebony
• Measurements: 25.4", 1 3/4"
• Profile: Modified Low Oval
• Weight: 3 lbs. 4 oz.
• Year: 2021
• Case: TKL Hard Shell
• Serial #: 2218114