Who is this maker JD?

[Kirils]

Hello, can someone please help me identify this maker. Sorry for the bad photo of a maker mark. This is the best I found. This mark is also very small. Looks like JD and can't understand what is in the middle.

[Zilver2]

Probably mark of François-Julien Doyen.
24 place Dauphine, Paris
N° de garantie : 5450
N° de préfecture : 5629
Symbol : a sheaf of wheat and a pomegranate fruit (une gerbe de blé et une grenade)
1852-1870

[blakstone]

Francois Julien Doyen

Born: 12 Sep 1812, Paris, 5e arrondissement, son of Louis Julien Elenore Doyen & Angelique Antoinette Brunier
Married: 26 Aug 1835, Paris, 11e arrondissement, to Anna Francoise Beyerle
Died: 13 Aug 1869, Paris, 1er arrondissement, 24 place Dauphine

[Kirils]

Probably mark of François-Julien Doyen.
24 place Dauphine, Paris
N° de garantie : 5450
N° de préfecture : 5629
Symbol : a sheaf of wheat and a pomegranate fruit (une gerbe de blé et une grenade)
1852-1870

Probably mark of François-Julien Doyen.
24 place Dauphine, Paris
N° de garantie : 5450
N° de préfecture : 5629
Symbol : a sheaf of wheat and a pomegranate fruit (une gerbe de blé et une grenade)
1852-1870

Thank you!