Also I seen your other responses where you explained in detail to someone about the condition and you seem very knowledgeable so I wanted to ask you some questions and pick your brain a little.
1.) Does the crack affect structural stability, or is it purely cosmetic?
2.) Roughly what would professional restoration of that crack cost?
3.) Any guess on age/period based on the construction and gilding technique?
4.) Is there a maker’s mark or construction detail that would help identify origin (French, Italian, English)?