Die Break Stage Classifier
Classify supplied die-break observations without authenticating the coin.
Description
Die-break stage screening applies a priority to supplied crack and fragment observations.
Die-break stage screening applies a priority to supplied crack and fragment observations. A stage label is a review aid rather than evidence collected by the tool.1
Classify supplied die-break observations without authenticating the coin.
When to use Die Break Stage Classifier
Use this tool to classify supplied die-break observations without authenticating the coin.
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 Die Break Stage Classifier 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 crackReachesRim, fragmentDisplaced, dieSectionMissing using the field table and calculation rules, then run the tool.
- Read stage. 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 |
|---|---|---|---|
| crackReachesRim | Crack reaches rim | boolean | Required |
| fragmentDisplaced | Die fragment displaced | boolean | Required |
| dieSectionMissing | Die section missing | boolean | Required |
Set crackReachesRim, fragmentDisplaced and dieSectionMissing. Return the first stage in that priority, even if supporting lower-priority observations are false.
missing section→full-cud; else displaced fragment→retained-cud; else rim crack→die-crack; else insufficient Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| stage | Die-break stage | string; one of "die-crack", "retained-cud", "full-cud", "insufficient-evidence" |
{
"input": {
"crackReachesRim": true,
"fragmentDisplaced": false,
"dieSectionMissing": false
},
"output": {
"stage": "die-crack"
}
}Limitations and assumptions
No image or physical coin is inspected. The flag pattern is not checked for consistency and does not authenticate a mint error.
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 Grease-Filled Die Screen: Summarize caller-observed indicators for grease-filled die screen without treating the result as conclusive. For a complementary task, use Doubled Die vs. Double Strike: Classify caller-observed indicators for doubled die vs. double strike while preserving mixed and insufficient evidence.
References
-
Die Break Stage Classifier — tool.io
Similar or alternative tools
- Grease-Filled Die Screen
Summarize caller-observed indicators for grease-filled die screen without treating the result as conclusive.
- Doubled Die vs. Double Strike
Classify caller-observed indicators for doubled die vs. double strike while preserving mixed and insufficient evidence.