From the first Vincent Bach trumpet production in 1925 through the late 1970s, all Bach professional trumpets incorporated two-piece valve-casing construction. The bottom two-thirds of the casing was made out of yellow brass, and the top third was made out of nickel silver. The late 70s ushered in a new era of CNC machining capabilities allowing valve casings to be machined entirely out of yellow brass in one piece. From the late 1970s through today, all "180" series Bach Stradivarius trumpets have been made using the one-piece brass casing design.

The year 2010 marked the introduction of the newest generation of Bach Stradivarius trumpets; the "190" series. This series is built using a vintage two-piece valve casing design. Two-piece valve casings provide more feedback to the player, a quicker response, and more color in the sound. The model 190S43 is the latest offering in the "190" series Bach Stradivarius trumpets.

Bach Stradivarius trumpets are the top-selling professional trumpets in the world. The 19043 features a professional #43 bell with a side-seam resulting in a quick response and a brilliant tone. The combination of two-piece valve construction, nickel silver outer slides, brass valve guides, and a steel bell wire provides a broad sound with a quick response and great feedback to the player. The clear lacquer finish provides a subtle warmth to the overall sound. These features combined with a .459" medium-large bore allow the player to produce a well-rounded sound well suited for all types of music.