Create a cohesive luxury sticker pack for a premium menswear brand named Montreux Atelier. Style: Old Money Noir — aristocratic, dark, masculine, heritage-inspired. Use refined serif typography, crest-like symbols, heraldic elements, laurel branches, crowns, vintage keys, shields, monograms, and subtle ornamental lines. Color palette: deep monochrome (charcoal black, onyx, midnight blue) with minimal antique-gold accents. Mood: elite, mysterious, noble. Stickers must look premium, minimalistic, and suitable for high-end packaging, clothing branding, and accessories. Avoid bright colors, cartoon style, or modern futuristic shapes.