Damage Lookalikes
Common post-mint changes that are repeatedly mistaken for mint errors in online listings.
Machine Doubling
Flat shelf-like displacement created during the strike, not a doubled die variety.
Dryer Coins
Coins trapped in commercial dryers can become smaller, thicker-rimmed, smooth, and rounded.
Spooned Coins
Repeated edge hammering produces a thick rounded rim and reduced diameter.
Vise Jobs and Squeeze Jobs
Coins pressed together can transfer incuse reversed designs and imitate brockages.
Parking-Lot Damage
Traffic, grit, and pavement produce random flattening, gouges, bending, and abrasion.
Road Rash and Impact Damage
Repeated impacts create dents, flattened rims, displaced metal, scratches, and irregular shapes.
Heat and Fire Damage
High heat can discolor, blister, warp, expand, melt, or fuse coin surfaces.
Acid and Chemical Damage
Chemicals dissolve metal unevenly, reduce weight, pit surfaces, and leave deceptive weak designs.
Plating Bubbles and Zinc Rot
Copper-plated zinc cents can blister, split, corrode, and expose zinc beneath the plating.
Scratches, Gouges and Tool Marks
Sharp objects remove or displace metal after minting and are often mislabeled as die errors.
Rim Dents and Edge Damage
Drops, impacts, mounts, counting machines, and tools can deform a coin’s rim.
Counting Machine Damage
Automated equipment can leave repeated circular scratches, rim cuts, or parallel contact marks.
Coin-Wrapping and Roller Damage
Wrapping and counting systems can cut rims, scrape surfaces, or leave arcs.
Environmental Corrosion
Soil, salt, moisture, PVC, and reactive storage can pit, stain, encrust, or destroy surfaces.
Cleaned and Polished Coins
Abrasives or chemicals remove original surface, create hairlines, and alter color and luster.
Counterstamps and Punch Marks
Letters, symbols, numbers, or designs deliberately punched into a coin after minting.
Added, Removed and Altered Mintmarks
Mintmarks can be carved, added, moved, or removed to imitate scarcer coins.
Cut and Deliberately Clipped Coins
Tools can remove metal and create false clipped-planchet claims.
Bent and Folded Coins
Pressure, vehicles, tools, jewelry use, or deliberate alteration can bend coins after minting.
Plated, Painted and Coated Coins
Aftermarket plating, paint, enamel, toning chemicals, and novelty finishes change color and surface.
Magician Coins and Hollowed Coins
Two coins may be machined and joined to create trick pieces with mismatched faces or hidden cavities.
Jewelry Mount and Bezel Damage
Prongs, solder, drilling, loops, and bezels can distort edges and surfaces.
Electrical and Arc Damage
Electric current can pit, melt, fuse, and discolor coins in unusual patterns.
Saltwater and Shipwreck Damage
Long immersion can strip surfaces, create porosity, deposits, and uneven loss.
Filled Holes and Repairs
Drilled or punched holes may be plugged, soldered, tooled, or disguised.