June 1, 2019June 3, 2019Martin Guitars 1840 Martin & Coupa Guitar (High Grade) C. F. Martin Sr. formed a business agreement with John B. Coupa in early 1840 that gave Coupa the sale agency for […]
February 24, 2019March 1, 2019Martin Guitars 1846-1848 Martin & Coupa Guitar The Martin & Coupa had business relationship from early 1840 until John Coupa’s death on May 18, 1850. The business did not […]