Miles Davis used several custom Committees throughout his career, as documented in this Wordpress article. The article features one such trumpet, while linking to three others.

Source One (Wordpress):

Miles Davis played a variety of custom-made Martin Committee trumpets throughout his career; in the photo is a Green custom-made, engraved Martin trumpet with a Conn 5 mouthpiece with serial no. 707737. His name is engraved on the trumpet.

Source Two:

A Martin trumpet used by one of the twentieth century's most acclaimed and innovative musicians, the legenday Miles Davis. With an engraving on the front reading The Martin Committee Elkhart-Indiana Miles Davis, this extraordinary piece comes with a letter of provenance dated May 19, 1999 from Davis' son, Gregory, which states To Whom It May Concern I Gregory Davis confirm that this Martin trumpet serial #LM 713071 was used by my father Miles Davis through the late sixty's to the early seventy's. Very Truly Yours, Gregory Davis [sic] The overall condition of the horn is in excellent condition and comes with its own case as well as a black and white poster of Davis holding the trumpet.

Source Three (Deleted page. The Wordpress article provides a description):

Here’s a trumpet from former NBA star Dominique Wilkins. The Skinner Gallery in Boston started the bidding at $20,000 back in ’07 for a Miles Davis trumpet.

Source Four:

Martin Committee trumpet, serial number 203005. Dark green metallic finish, owned and played by miles Davis. This trumpet was given to the son of Davis' friend in 1966, boxing legend Sugar Ray Robinson. Davis was a boxing fan and befriended Sugar Ray and his wife, Edna. It is accompanied by a letter of authenticity from Sugar Ray's son, Ray Robinson, who was personally given the trumpet. The bell of the trumpet reads, "The Martin Committee Model / Elkhart / IND / USA" with ornate floral etchings. Keys are made from mother of pearl. As was typical of Davis, the mouth piece is intentionally bent upward and just below the mouthpiece, where Davis' thumb would have rested, shows signs of wear. (est. $10,000-$20,000)

Mentioned in this January 2, 2010 Smooth Jazz Vibes interview.

Another part of the equation that helps create the special tone is made via the instrument itself. Chris Botti plays a rare 1939/1941 Martin Committee trumpet with a slightly larger bell. The horn was popular from the late 1940s until the mid-1960s played by legends such as Miles Davis, Chet Baker, Dizzy Gillespie, Maynard Ferguson, Al Hirt, Kenny Dorham and Clifford Brown. Botti purchased the trumpet in 2003. Botti has said that “it was like finding a rare Jaguar or a rare Porsche. The sound is just so dark and beautiful, with a really soft and inviting tone." Botti also uses a 3C silver plated mouthpiece from Bach made in 1926, after retiring his 1920 3C Bach mouthpiece. He also uses a Leblanc Vacchiano Harmon mute from the 1950s.

The same trumpet is also featured in this December 23, 2016 Facebook post by Botti.

The Trumpet... #martin #committee #handcraft #largebore #3