I have an antique ladies writing desk that was resently restored. There are no marks or labels to tell me what year it was made. It has a hump in the center and is all hand crafted from African Mahogany and trimmed in Brass.The detailing in the brass along the back of the desk looks like little crowns with a fleur-de-lis on each one. Does anyone know what this style of desk is called and what year it may have been made?