From the current Davis and Bechet web site:
Davis and Bechet We are makers of fine professional saxophones. Currently we only offer professional level saxophones. We are a joint endeavor between American enterprise, French saxophone engineering and Chinese craftsmanship. All of our Saxophones are made under the direct supervision of french SELMER engineers.
Have no idea about the euphonium.
Gary Merrill
Wessex EEb Bass tuba (DW 3XL or 2XL)
Mack Brass Compensating Euph (DE N106, Euph J, J9 euph)
Amati Oval Euph (DE 104, Euph J, J6 euph)
1924 Buescher 3-valve Eb tuba (with std US receiver), Kelly 25
Schiller American Heritage 7B clone bass trombone (DE LB K/K10/112/14 Lexan, Brass Ark MV50R)
1947 Olds "Standard" trombone (Olds #3)