Alan: Welcome to SOTW. It appears your left pinky is opening the C# vent. The low B (we call it B1) is the spatula just above where your left pinky is resting. If you remove your left pinky and keep the rest of your fingers positioned as they are in the photos, you will sound a saxophone C.
One thing to keep in mind is that with the exception of just a few notes, your horn will sound notes higher as each vent open. Look to see what tone-hole is opened by each spatula and you can see how the tone will rise as you open each vent above the other. DAVE
One thing to keep in mind is that with the exception of just a few notes, your horn will sound notes higher as each vent open. Look to see what tone-hole is opened by each spatula and you can see how the tone will rise as you open each vent above the other. DAVE