Find Your Sigma Filter Guitars Filtered (0) Filters Reset all × Grand OM × Flamed Koa × European Spruce × Mahogany × Cutaway × 44,5 mm (1-3/4") × 47,6 mm (1-7/8") × 46 mm (1-13/16") × Top Wood Mahogany Sitka Spruce Back & Sides Flamed Koa Show (0) Cancel No Results Found The page you requested could not be found. Try refining your search, or use the navigation above to locate the post.