I seem to have come across a III7 chord in A harmonic minor, and I'm not quite sure about its function.

I initially thought it might have been V7, but there is a leap of a third between the C and E in the bass (treble clef), suggesting they are both chord tones, and judging that the next chord cannot be chord i down to the melody notes in the top part (in bar ''2''), I have ruled out V 13. We also have a B and a G (sharp?) in the bass, all of which seem to belong to III7 in A harmonic minor.

If this is indeed III7, does the G sharp still have to resolve upwards to A in the next chord? In this case, the next chord seems like it could well be another III7 (or perhaps V7), and the chord following it (unpictured) seems to be V7. Do i just keep the G sharps until it resolves to A? Or perhaps its possible to use a major III chord with no G sharp?

Thanks

Ed

[![enter image description here](https://i.stack.imgur.com/Ox3T4.jpg)](https://i.stack.imgur.com/Ox3T4.jpg)