Coin Patina Evidence Screen

Organize visible patina and cleaning evidence without claiming that “desert” or “hoard” appearance proves find context, authenticity, or provenance.

Description

Patina evidence can combine declared burial-associated and collection or cleaning observations.

Patina evidence can combine declared burial-associated and collection or cleaning observations. The tool organizes those observations without treating appearance as proof of find context.^[1]

Organize visible patina and cleaning evidence without claiming that “desert” or “hoard” appearance proves find context, authenticity, or provenance.

When to use Coin Patina Evidence Screen

Use this tool to organize visible patina and cleaning evidence without claiming that “desert” or “hoard” appearance proves find context, authenticity, or provenance.

Prepare documented records or observations for the specific coin or issue context. Enter the required labels, reference table or evidence flags and retain the supporting catalog and examination notes for interpretation.

How to use Coin Patina Evidence Screen and understand its results

Prepare documented records or observations for the specific coin or issue context. Enter the required labels, reference table or evidence flags and retain the supporting catalog and examination notes for interpretation.
Enter cleaningScratches, localizedMineralDeposits, soilAdhesion, uniformCabinetTone using the field table and calculation rules, then run the tool.
Read classification, evidenceCount. The explanation below defines the units, signs, ordering and any flags or placeholder values.
If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.

Input field	Meaning	Value type; see rules below	Requirement
cleaningScratches	Cleaning scratches observed	boolean	Required
localizedMineralDeposits	Localized mineral deposits observed	boolean	Required
soilAdhesion	Soil adhesion observed	boolean	Required
uniformCabinetTone	Uniform cabinet tone observed	boolean	Required

Set the four flags. Return insufficient-evidence for zero total; mixed-evidence when both groups have any flag; otherwise burial-associated-evidence or collection-tone-evidence. Any two-group combination stays mixed regardless of counts.

burial=deposits+soil; collection=cabinetTone+cleaningScratches; count=burial+collection

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
classification	Evidence classification	string; one of "burial-associated-evidence", "collection-tone-evidence", "mixed-evidence", "insufficient-evidence"
evidenceCount	Observed evidence count	integer; minimum: 0; maximum: 4

json

{
  "input": {
    "cleaningScratches": false,
    "localizedMineralDeposits": true,
    "soilAdhesion": true,
    "uniformCabinetTone": false
  },
  "output": {
    "classification": "burial-associated-evidence",
    "evidenceCount": 2
  }
}

Limitations and assumptions

No surface chemistry, cleaning history, authenticity or provenance is verified. The collection grouping includes scratches as a supplied observation, not proof of a documented collection history.

Numeric inputs must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use Artificial Toning Screen: Summarize caller-observed indicators for artificial toning screen without treating the result as conclusive. For a complementary task, use Electrolysis Risk Screen: Summarize caller-observed indicators for electrolysis risk screen without treating the result as conclusive.

References

Coin Patina Evidence Screen — tool.io

Similar or alternative tools

Artificial Toning Screen
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