This is the ALTERED bb7 (ALTERED DOUBLE FLAT 7) scale.
ALTERED bb7 is the 7th mode of Harmonic Minor.
It is made of the intervals: 1,b2,b3,b4,b5,b6,bb7.
The free guitar scale diagrams below lay out the scale for you all over the neck, as a 4 note per string 3 octave scale, and as the 7, 3 note per string scales that will let you play the scale all over the neck in any key.
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