This was sold as Phra Mae Thorani from Burma.
Bought it for its grace, elegance and simplicity. Its height at 28.5 cm helped.
Not quite sure about the identity or the regional attribution.
She is standing on a lotus, signifying a goddess. The open arms stretched in front of her almost suggests Deepalakshmi. The cut portion on her back and the sealed portion at the back on the lower garment may be consecration related, suggesting Buddhist origin.
The open lotus at the base is not uncommon in Nepal bronzes. The flare of the lower garment is something I have seen in Dipankara Buddha bronzes from Nepal. Absence of published examples from Burma does not help.
If you have any information or suggestions please contact me Padmanabhan.email@example.com.