Diagnostic Controls & Presets 1909-S VDB Key Date
Diagnostic Forensic Readings
Forensic Attribution Diagnostic
Real-time metallurgical and die variety cross-examination verified against certified populations.
Technical Breakdown: Physics, Metallurgy & Die Diagnostics
The 4 Genuine 'S' Mintmark Positions
In 1909, mintmarks were hand-punched into dies before hardening. Exactly 4 working dies struck the 484,000 1909-S VDB cents:
- Position 1: Centered evenly between the 1 and 9; straight vertical axis.
- Position 2: Tilted clockwise; upper serif directly below the curve of the second 9.
- Position 3: Low position; shifted towards the rim denticles.
- Position 4: High position; upper loop close to the bottom of the date numerals.
Brenner V.D.B. Period Geometry
Sculptor Victor David Brenner placed his initials V.D.B. at the bottom rim between two wheat stalks.
Genuine periods are not round dots—they are distinctly elongated ovals tilted at a 45-degree angle. The center horizontal crossbar of the letter 'B' slants upwards to a sharp inner angle.
Counterfeit Detection Forensics
Because common 1909 VDB Philadelphia cents (28 million minted) sell for only $15, counterfeiters commonly solder or glue 'S' mintmarks cut from common 1940s-S pennies onto 1909 VDBs.
Under 20x magnification, inspect the field around the 'S'. Genuine coins exhibit unbroken radial metal flow lines around the mintmark; fakes show tool scratches, acid halos, or glue seams.
Documented Benchmark Auction Records
Flawless fiery red copper luster with needle-sharp Brenner initials and pristine die position #1.
Superb Gem with full booming red mint color and pristine unbroken oval periods.
Borderline uncirculated specimen with light cheek friction and sharp verified Position #2 tilt.
Frequently Asked Questions
Why is the 1909-S VDB Lincoln cent so famous?
The 1909-S VDB is the most famous regular-issue key date in American numismatics. It was struck during the inaugural year of the Lincoln cent with a mintage of only 484,000 pieces before public outrage over sculptor Victor David Brenner's prominent initials forced the US Mint to stop production and remove 'V.D.B.' entirely.
Why were Brenner's initials removed in 1909?
When the new Lincoln cent debuted on August 2, 1909, newspapers and the public criticized the prominent 'V.D.B.' on the reverse bottom rim as free personal advertising for sculptor Victor David Brenner. Mint Director Frank Leach ordered production halted on August 5 and redesigned the reverse without initials.
How many genuine mintmark positions exist for the 1909-S VDB?
Exactly 4 genuine obverse die positions exist. Because the San Francisco Mint only prepared four working dies for this short production run, any 1909-S VDB that does not match one of these four documented positions is a confirmed counterfeit.
What is the most common counterfeit of the 1909-S VDB?
The most common fake is an authentic Philadelphia 1909 VDB (which is common and cheap) with an 'S' mintmark added under the date. Counterfeiters either solder a tiny 'S' cut from a common 1940s cent or drill a microscopic hole from the coin's edge and emboss an 'S' outward with a needle.
How do you identify a fake added 'S' mintmark?
Under 15x or 20x magnification, check the field around the 'S'. On a genuine coin, radial metal flow lines continue smoothly up to the base of the letter. On an added mintmark, you will see microscopic tooling marks, discolored soldering halos, glue residue, or an incorrect serif shape.
How can you verify genuine V.D.B. initials on the reverse?
On genuine coins, the periods following each letter are slanted ovals (not perfect circles) pointing northwest-to-southeast. The center crossbar of the 'B' has a sharp upward angle, and the letter 'D' is distinctly wider than the 'B'.
How much is a genuine 1909-S VDB worth in circulated condition?
Even in heavily worn Good-4 condition, a genuine 1909-S VDB commands between $600 to $750. In Very Fine condition it trades for $950 to $1,200, in About Uncirculated around $1,600 to $2,000, and in Gem Mint State Red (MS-65 RD) it routinely exceeds $5,000 to $15,000+.