Gb minor 13th chord

Gbm13 chord for piano with keyboard diagram.
Explanation: The G flat minor thirteenth is a seven-note chord. For practical reasons the chord is normally played with omitted notes and/or inverted. The chord is often abbreviated as Gbm13 (alternatively Gbmin13).
Theory: The Gb minor thirteenth chord is constructed by expanding the minor eleventh chord with a major thirteenth note.