Grading notes
Strike is part of the diagnosis.
Judge wear at the eagle breast, wing feathers, serpent, cactus, LIBERTAD band, and central rays only after accounting for weak strike, die wear, and adjustment marks.
Representative Republican issue study
1852 Do CP/JMR Overassayer 8 Reales
This Durango transition records CP over JMR as a source-labelled overassayer relationship. The register keeps CP/JMR distinct from the CP and JMR base entries and does not silently merge the officers or their service ranges.
A mature diagnostic study selected from the complete matrix; neighbouring records stay matrix-only until they pass the same gate.
Verified image pendingNo neighbouring date, mint, or type is substituted
1852Date
DoMintmark
CP/JMRAssayer mark
Unknown — not zeroMintage
Historical and mint context
1852 Do CP/JMR Overassayer 8 Reales
This Durango transition records CP over JMR as a source-labelled overassayer relationship. The register keeps CP/JMR distinct from the CP and JMR base entries and does not silently merge the officers or their service ranges.
DoDurango Mint
CP/JMRContextual assayer mark
KM 377.4Catalog crosswalk
1Normalized matrix rows
Unknown — not zeroReported mintage
Attribution diagnostics
Read the complete identity before grade or price.
- Look for both CP and the underlying JMR traces in the assayer position.
- Keep the date-punch diagnosis separate from the overassayer diagnosis.
- Use the Durango 1852 officer transition as context, never as proof without visible marks.
| Date | Mint | Assayer | Design generation | Variety classes | Confidence |
|---|---|---|---|---|---|
| 1852 | Do | CP/JMR | Mid-century regional hub families | overassayer | specialist-registry |
Authentication notes
Check cumulative compatibility.
Check the complete date–mint–assayer combination, die style, 27.07 g nominal standard, diameter tolerance, security edge, and .903 silver standard. This page is not a substitute for professional authentication.
Population and market evidence
No unsupported price or population snapshot.
No population total, survival estimate, or grade-price table passed the normalized, dated, multi-source publication gate.
Sources
Issue identity and series context.
- The Durango mintMexican Numismatics · tier 2 · 2026-07-21
Durango assayer names and documented service periods; design-transition context.
- Mexican 8 Reales, Circulation Strikes (1823–1897): Set CompositionPCGS Set Registry · tier 2 · 2026-07-21
1,112 date–mint–assayer–variety registry slots used as the primary issue-matrix crosswalk. Registry weights are not rarity estimates.
- 8 Reales – Mexico (N# 7394)Numista · tier 2 · 2026-07-21
Discovery and cross-check only: nominal 27.07 g, .903 silver, 38.9 mm reference diameter, security edge, orientation, and mint-level KM family suffixes.