Amitabha Buddha, Tibetan or Nepalese

I bought this Amitabha Buddha at an estate sale and know very little about it beyond what I've learned online. The metalwork is exquisitely detailed and it looks as though two or three different metals were used, e.g., copper and brass. In the Buddha's lap there's a hole, and a matching peg on the bottom of the shakti (consort) fits into this hole so that her legs, which project from the back of the statue, look as though they're attached to her, but they're not. I understand that it's rare to find a Buddha with a shakti, and that these are only find inside temples where the public is not allowed to enter.

Good