Antique Domino Set from France, box included factory

23 Dominoes in what I assume is the original box which is lined with orange fabric and in gold lettering inside the upper lid says "Au Nain Bleu Paris"

Each domino, which I believe to be made from bone, measures 1.625" by 0.375" and there are 23 of them.

The box is a weathered leather blue and tan (where rubbed/faded). Measures 6.5" wide by 2.625" tall and 2.25" deep.

To open the box gently lift the lid and the front panel will drop down revealing your new pile factory of bones.