Gautier was a master of the etching needle. His style is defined by a controlled use of line and a focus on atmospheric perspective. In Little Arm of the Seine, he uses fine hatching to suggest the movement of water and the weight of stone bridges. He avoided the soft focus of Impressionism. Instead, he maintained a sharp, architectural clarity. This precision allowed him to record the specific textures of Parisian streets, from the cobblestones of La rue du Haut Pavé à Paris to the soot on industrial chimneys.

Modern collectors value Gautier for his unsentimental view of urban life. His prints provide a view of a Paris that was both historic and rapidly modernising. The monochromatic nature of his etchings fits well in contemporary interiors that favour neutral palettes. His work offers a sense of permanence and structure. These prints appeal to those who appreciate technical skill and the history of urban architecture.