How to play an E7b5 chord on Accordion

AKA: E7(b5), E7/b5, E7(-5), E7 Flat 5, E Dominant 7th b5, E Dominant Seventh Flat Fifth

 

Notes:

E, G#, B♭, D

Intervals:

R, 3°, dim5°, m7°

Left hand:

E + B♭7

Fingering:

2 + 5 (bass pattern)

or

3 or 4 + 2 (counter bass pattern)