CM27 Mintage Changes
Banco de México Revisions to Historical Libertad Mintages
For many collectors of Mexican Libertads, official Banco de México mintages are treated as the definitive historical record for the series. These figures influence rarity discussions, long-term population expectations, market valuations, and collector demand across both proof and brilliant uncirculated (BU) Libertads. Within the Libertad collecting community, one of the most widely referenced independent resources has been the mintage tables maintained and periodically updated by Bullion Cat, who has consistently tracked official Banco de México CM27 report figures and published updated reference tables across Instagram, Reddit, and private Libertad collector groups. In 2023, Bullion Cat identified a notable adjustment involving the 2022 1 oz Silver BU Libertad, where the reported mintage changed from 550,000 to 350,000 within the CM27 report. This revision was subsequently incorporated into updated community mintage tables. However, in May 2026, additional revisions were discovered affecting multiple earlier Libertad years, particularly within the 2000–2005 period for both proof and BU issues. What makes these changes especially notable is that the revisions do not follow any consistent directional pattern:
- Some mintages increased materially
- Some mintages decreased materially
- Some revisions were relatively minor
- Others were extremely large Because these are historical years that are already decades old, the revisions raise broader questions regarding the long-term consistency and archival stability of official published mintage figures. The purpose of this page is not to speculate on the reason for these revisions, but rather to preserve a historical snapshot of the reported CM27 changes as they appeared before and after the May 2026 revisions.
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1 oz Silver Proof Libertads — Pre-May 2026
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1 oz Silver Proof Libertads — Post-May 2026
⸻ 1 oz Silver BU Libertads — Pre-May 2026
⸻ 1 oz Silver BU Libertads — Post-May 2026
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Proof Revisions Observed
| Year | Previous | Revised |
|---|---|---|
| 2000 | 1,600 | 2,000 |
| 2001 | 2,000 | 3,500 |
| 2002 | 3,800 | 4,700 |
| 2003 | 5,400 | 5,000 |
| 2004 | 3,000 | 4,000 |
| 2005 | 3,300 | 3,000 |
BU Revisions Observed
| Year | Previous | Revised |
|---|---|---|
| 2000 | 340,000 | 455,000 |
| 2001 | 725,000 | 385,000 |
| 2002 | 850,000 | 1,270,000 |
| 2003 | 805,000 | 500,000 |
| 2004 | 450,000 | 550,000 |
| 2005 | 698,281 | 800,000 |
| 2022 | 550,000 | 350,000 |