My name is ***** ***** I would love to help. The next step would be for me to see pictures so that I can get visual clues of the date and value. Use the Add Files feature on your screen to add pictures. Add pictures of the picture and signature (as well as marks or labels on the back).
These are three framed shadow boxes of plaster intaglios from the Italian Grand Tour from the early 19th century , 1830's. Most intaglio boxes have multitudes of cameos in one case. Yours have fewer than most. This set has a value of $1400 to $1600.00. Here is a page of varied examples...https://www.pinterest.com/arabbella/decor-cameos-intaglios/
There is a modern artist named Bertie Hall that also makes these now, but yours have older frames and do not seem to quite match her style of arrangement.
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