Empty mark on french silver spoon

[AMD]

Hello,
Sorry for my english. I have a french silver spoon with an empty diamond mark. Does one of you know its meaning ? We can cleary see the "poinçon de titre" and the "poinçon de Bigorne" and the diamond mark which is empty. You can see photos by clicking on this link : https://www.dropbox.com/sh/7j94bf4wafshl2o/U8faDeD5DW
By the way, can you confirm that this is a sugar spoon and tell me from when it might date ?
Thanks beforehand.

Bonjour,
J'ai une cuiller à sucre parisienne dont on voit très clairement le poinçon de titre et le poinçon de bigorne. Par contre, pour le poinçon de maitre, il y a un losange vide. Est-ce que quelqu'un saurait ce que ça signifie ?
Vous pouvez voir des photos sur le site suivant : https://www.dropbox.com/sh/7j94bf4wafshl2o/U8faDeD5DW
Par ailleurs, pourriez-vous me confirmer qu'il s'agit bien d'une cuiller à sucre et me dire, à votre avis, de quelle période elle serait ?
Je vous remercie par avance.

[oel]

Hi, welcome to the forum,

French sugar ladle/shaker for sifting powdered sugar onto desserts, in the Art Nouveau style. Late 19th century or circa 1901

Oel.

[AMD]

Thank you for your response OEL.
Do you know why the maker's mark is empty ? Have you seen that before ?

[oel]

Hi,

Yes, I have seen many 'unreadable' makers' marks. The lozenge or French makers'mark might appear to be empty but it could have been a bad punch and /or rubbed by cleaning or otherwise become ‘unreadable’ Our French experts perhaps could tell you more or give a better explanation.

Oel.