Why it matters
Without this, misattribution, missed inscriptions, or incomplete coin lists can stall reporting, delay HER compliance, and create backlogs in post-excavation assessment and archive deposition.
From design to safety
Design
AI-guided coin feature schema
The system reads legacy databases, expected coin types, and numismatic metadata; it creates an initial feature schema for legends, mints, corrosion baselines, die alignment, and batch provenance used in WSI and field planning.
- coin list ledger
- legend catalog
- mint die sample
- corrosion assay kit
Build
Digital capture and curation
Surface scans capture coin surfaces, wear patterns, context sheets, and coin lists; AI flags missing fields, proposes standard entries, and integrates with WSI, archive registry, and material workflow.
- coin tray
- legend catalog
- mint die sample
- corrosion assay kit
Operation
Real-time identification and recording
High-res imagery, spectroscopy, micro-imaging, and attribute extraction enable provisional attribution; updates flow to the coin list ledger, context sheets, and curatorial notes with provenance.
- coin tray
- legend catalog
- mint die sample
- coin list ledger
Maintenance
Data quality and archive readiness
Calibration checks, image quality metrics, conservation notes, and provenance chain verification ensure long-term accessibility; post-excavation assessment readiness is maintained and updated through versioned records.
- coin tray
- legend catalog
- mint die sample
- coin list ledger
Safety
Safety-aware data governance
The system logs near-coin handling risks, trench constraints, contamination indicators, and documentation for buried services; ensures compliance during finds processing and material transfer with sign-off requirements.
- corrosion assay kit
- coin list ledger
- legend catalog
- mint die sample
Part by part
- 1
coin tray
- Watch for
- unusual color bands or clumping indicating contamination or corrosion gradients
- AI action
- image/scan coin surfaces to flag corrosion hotspots, misaligned edges, and surface flaking for immediate handling precautions
- 2
legend catalog
- Watch for
- illegible or partially erased legends indicating wear patterns or counterfeit indicators
- AI action
- OCR reads legends, fonts, and ligatures; flags uncertain readings for curator review and archives provisional attributions with confidence scores
- 3
mint die sample
- Watch for
- unexpected mint marks or dating inconsistencies
- AI action
- pattern match to known mint signatures, compare die linkage, and flag outliers for specialist review and retagging in the coin list ledger
- 4
issue catalog
- Watch for
- incomplete issue classification or clipping
- AI action
- classify issues by denomination, issue date, strike quality, and metallic composition, record die-links, and flag suspicious or non-conforming issues
- 5
corrosion assay kit
- Watch for
- accelerated corrosion on coin surfaces
- AI action
- spectral analysis reads corrosion phase and patina, guiding conservation actions and prioritizing treatment steps in the conservation log
- 6
coin list ledger
- Watch for
- data mismatch between context sheets and coin list
- AI action
- validate entries against context, update provenance chain, and generate archival metadata packets for HER submission
Worked example
Catching a rare mint attribution before post-excavation
Illustrative scenario with sample data.
An on-site assessment identifies a coin with a partial legend that could indicate a rare mint issue; AI assists attribution to avoid misclassification in the archive.
Signal in
coins: 12; legends: partial; mints: unknown; corrosion: medium; context: trench 3, layer B; date-range: 100–250 CE; operator: finds team; site: urban settlement
System out
AI flags potential rare mint attribution; generates provisional tag and requests curator review; logs provenance, attribution confidence, and archival notes in coin list ledger with reference to context sheets.
Human sign-off: Post-excavation manager approves provisional attribution and forwards to HER curator for final confirmation, recording decision in HER case file.
How to roll it out
Phase 1
Weeks 1 to 4
Baseline data model established; core sensors calibrated; initial coin list and legends schemas deployed; initial QA checks and standard entries defined.
Phase 2
Weeks 5 to 8
Field teams begin live data capture; ongoing QA checks; integration with WSI, archive registry, and narrative reporting to client and planning authorities.
Phase 3
Weeks 9 to 12
Full workflow demonstrated; automation of find processing and reporting to client, planning authority, and post-excavation team; archival deposition plan drafted.
Where people stay in charge
- Decisions about attribution must be signed off by a chartered archaeologist or equivalent qualified professional, who also reviews provenance and archiving requirements.
- Data handling and conservation actions must comply with established curatorial standards and HER procedures, with sign-off by the curator or HER officer.
- Legal and regulatory compliance decisions, including archive deposition and client reporting, require final approval by the planning archaeologist and project supervisor before archival transfer.
Questions owners and crews ask
How does AI help with coin legends and mint identification on site?
The AI reads inscriptions, fonts, and ligatures, compares to reference legends, and flags readings needing curator confirmation; provisional attributions are recorded with confidence scores and linked to context sheets.
What happens if the AI finds unlikely coin attributes during recording?
It escalates to a qualified finds supervisor for review; the supervisor consults the reference database, validates against context, and updates the coin list ledger with a warranted attribution.
How is archival quality ensured for numismatic records?
Data are annotated with context, provenience, and preservation notes; high-resolution images and metadata are stored with version history in the archive-ready coin list ledger and HER system.
Who signs off on post-excavation numismatic findings and reporting?
The post-excavation manager coordinates with the curator, HER officer, and planning archaeologist to sign off on final attribution and archive deposition plan, ensuring traceability.
Sources and further reading
- GOV.UK: Treasure Act 1996 Code of PracticeCode of practice explaining treasure valuation, finds handling, and archaeologists' responsibilities for reportable coins and objects.
- CIfA: Standards and GuidanceStandards for finds, archives, and post-excavation practice guiding recording and archive readiness for coin assemblages.