The 54JM matte finish with lacquer keys provides a unique look and warm tone. Yellow brass body tubes and keys resonate across the entire timbre spectrum: full-ribbed construction enhances durability. Series II body style-full sound, Necks: Series II bore, Construction: full ribs, Body material: matte finish over yellow brass with clear lacquer keys. Compact key positioning - closer to the body and directly under the hand, Range: high F# key, Front F key: spatula, Left-hand thumb rest: plastic, Right-hand thumb rest: plastic adjustable, Adjusting screws: high F, G# key, F#/G# lug, F#/G#, adjusting bar, low C#, low B, side C, side Bb, Pivot screws: tapered, Needle springs: blued steel, Pads: treated leather with metal resonators. Case included.