A formal portrait engraving of Alexandre François Joseph Martin de Gray by French artist Ambroise Tardieu, dating to circa 1818.

This engraving by Ambroise Tardieu depicts Alexandre François Joseph Martin de Gray, a French politician who served as a deputy for the Haute-Saône department. The work dates to approximately 1818, the year of his election to the Chamber of Deputies. Tardieu, a skilled cartographer and engraver, employs a precise technique characteristic of early nineteenth-century French portraiture.

The subject is presented within a clean oval frame, a common format for political portraiture of the era. His gaze is directed toward the viewer, conveying a sense of formal authority. The artist uses fine, parallel lines to model the contours of the face and the texture of the subject's coat, creating a subtle play of light and shadow. The composition is balanced and restrained, reflecting the aesthetic values of the period. Below the portrait, the inscription identifies the sitter and his political role, providing essential historical context for the viewer.

Ambroise Tardieu was known for his technical proficiency in copperplate engraving. His work often appeared in historical and biographical publications, documenting the figures of the Bourbon Restoration. This print is an example of the documentary function of portraiture in the early nineteenth century, where such images were produced to circulate the likenesses of public officials. The print remains in a state that preserves the clarity of the original lines, allowing for a clear view of the artist's method. It is a piece of historical documentation that captures the sartorial style and formal presentation of a French politician during the post-Napoleonic era.