An indent error occurs when two planchets are accidentally stacked together during striking, but only partially overlapping. The top planchet receives a full strike on its exposed portion but leaves an indent — a shallow impression — on the lower planchet where it overlapped. Both coins exit the press with evidence of the stacking: the top coin with a partial strike, and the bottom coin with a smooth, recessed area.
Indent errors demonstrate that the automated feed system occasionally places two blanks in the striking chamber simultaneously. When the blanks partially overlap, the dies cannot reach the covered portions of the lower planchet. The upper planchet acts as a shield, creating a smooth, unstruck area on the coin below. The shape and size of the indent correspond to the overlapping portion of the other planchet.
Indent error values depend on the size of the indent relative to the coin, the clarity of any design transfer within the indent, and the denomination. Larger indents are more valuable. Cross-denomination indents (where the indenting planchet was a different denomination) are particularly interesting and desirable. Values range from $15-30 for minor indents to $50-200+ for dramatic examples.
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Scan NowTwo planchets are fed into the striking chamber together, partially overlapping. The top blank prevents the die from reaching part of the bottom blank, creating a smooth, recessed area.
Genuine indents have smooth, uniformly recessed areas with curved boundaries matching a round planchet. Damage tends to show rough surfaces, tool marks, or irregular shapes.
They are moderately common among striking errors. Minor indents from small overlaps are found with some regularity, while large, dramatic indents are less common.
Yes. If planchets of different denominations mix in the feed system, a larger planchet can indent a smaller coin or vice versa. Cross-denomination indents are particularly collectible.