Antique French Diorama

Incredible original antique French Diorama. Dioramas are highly coveted by collectors. This piece is incredibly detailed. It still retains French writing on the back. I am unable to decipher what the writing says (perhaps a boat name or signature?).  In lovely condition for age. Please see photographs as they form part of the description.  Measures Approximately 62cm long x 44cm tall x 13cm deep