SEABEE NAVAL MOBILE CONSTRUCTION BATTALION THREE - COLOR - 4" Round NMCB-3 Patch - High Quality Embroidered PATCH - COLOR - Very Durable with Iron On Backing. Great Detail and Stitching for a Jacket or Vest. Great Gift Idea for SEABEE Member who served in or was stationed with NMCB 3. Veteran Owned and Operated Business - Retired Marine.