Plate Guangxu?

Hi folks,

I found this weird wavy plate. The seller claims it’s from the Guangxu period, but I see it later. Any help on the period and mark will be very grateful.

Best wishes!

 

The mark is for the Jiajing period, 16th century. I guess it's possible it could be late 19th or just pre Republic (Guangxu) but hard to tell without seeing it in person. I do see poorly drawn phoenix type birds on Japanese porcelain from the same period or slightly later on Imari ware.