Information on reproduction of Sandro Botticelli "Madonna"?

Question

From the celebrated painting in the National Gallery-London.
Engraved in the pure mezzotint, and printed in colours at one
printing by Charles Bird
Limited edition to 250 impressions - plate to be destroyed

Answer 1

The closest I can find to your Charles Bird is the American painter Charles Bird King (1785-1862).

If your mezzotint is by him, then I would seek a professional valuation.

Otherwise..............who knows.

Do you have any other provenance on it?

Answer 2

uuhhh......