CoinyMoiny

CoinyMoiny: Numismatic & Bullion Logbook is your cozy digital workspace, Sheldon scale grading assistant, precious metal melt value engine, and die variety journal. Designed for coin collectors, bullion investors, numismatists, and coin hunters, CoinyMoiny turns complex coin grading, precious metal math, and mint mark tracking into a clear, organized workflow. Grade coin conditions using visual Sheldon scale references, calculate exact bullion intrinsic values based on gold and silver purity, track rare die varieties, and archive your collection in a private digital vault. Key Features and Numismatic Studio Tools Sheldon Scale & Condition Grading Assistant - Interactive Sheldon Scale Guide: Assess coin condition from Poor-1 to Perfect Uncirculated-70 using detailed wear criteria for luster, strikes, and contact marks. - Surface Condition Logger: Record toning, rim nicks, cleaning indicators, and eye appeal ratings for every coin in your ledger. - Professional Slab & Raw Registry: Catalog both raw uncertified coins and certified slabs (PCGS, NGC, ANACS) with certification numbers and grade notes. Bullion & Melt Value Engine - Precious Metal Content Calculator: Compute exact intrinsic melt values for gold, silver, platinum, and copper coins based on fine weight and purity. - Historical Face-to-Melt Multiplier: Calculate melt margins for junk silver bags, pre-1965 circulating coinage, and constitutional gold. - Collection Metal Weight Analytics: Track total fine silver and gold troy ounces across your entire numismatic vault. Die Variety & Mint Error Journal - Mint Mark & Variety Tracker: Log specific mint marks, die clashes, doubled dies (DDO/DDR), repunched mint marks (RPM), and planchet errors. - High-Contrast Macro Photo Journal: Store high-resolution macro photos of coin obverses, reverses, and edge lettering. - Provenance & Purchase Log: Track acquisition prices, dealer origins, auction records, and estimated fair market values. Studio Analytics & Complete Offline Access - Portfolio Value Breakdown: Analyze visual charts of your collection split across historic eras, metal types, grades, and countries. - 100% Offline Access: Calculate melt formulas, access grading guides, and manage your coin registry anywhere without an internet connection. Designed for: - Numismatists and coin collectors building detailed private collection registries. - Bullion stackers calculating fine silver and gold content across world coins. - Error and variety hunters documenting die varieties, mint marks, and coin grades.