Original Victorian Nautical Themed outlet Solid Silver And Mother Of Pearl Souvenir Brooch In The Shape Of A Postcard From Boulogne Sur Mer C1880

Original Victorian Nautical Themed Solid Silver And Mother Of Pearl Souvenir Brooch In The Shape Of A Postcard From Boulogne Sur Mer C1880.
This is a very unusual brooch, I love the canted outlet corners giving the brooch the feel of being postcard or letter.
There are some tiny nibbles to one corner of the brooch, please see photos.
The brooch measures 1 and a 1/4 inches long x a generous 7/8ths of an inch wide.
Any questions please ask.
Thanks For Looking.