Repunched Date (RPD)

A Repunched Date occurs when one or more numerals in the date are punched into a coin die more than once with slight misalignment between impressions. The result is a date that shows traces of secondary positioning alongside the primary digits -- a doubled, shifted, or spread appearance to individual numerals caused by the die maker striking the date punch in a slightly different position on the second attempt. RPDs are the date equivalent of Repunched Mint Marks (RPMs) and were produced by the same hand-punching process.

What Is a Repunched Date?

Until 1908, date digits were added to U.S. coin dies by hand. A Mint employee positioned a steel punch bearing the appropriate numeral over the designated date area on the die face and struck it with a mallet. At first each digit in the date required its own punch strike; from around 1840 a multi-digit logotype carrying the date was used instead. If any digit was not driven deep enough on the first strike, or if the positioning was not satisfactory, the worker struck the punch again. Any misalignment between the first and second impressions created a repunched date.

RPDs show traces of both the original and secondary punch positions. The secondary image appears as a partial or complete shadow of the primary digit, offset in a consistent direction. Some RPDs are dramatic, with the secondary impression clearly separated and visible under low magnification. Others are subtle, showing only slight thickening or notching on the edges of individual digits.

RPDs are distinct from Overdates (OVDs), where a different date is punched over a previous date. An RPD involves the same year punched more than once. They are also distinct from Misplaced Dates (MPDs), where a date digit is punched in a completely wrong location on the die.

How Does It Happen?

The production of RPDs was a natural consequence of the hand-punching process:

• Insufficient initial depth: The first punch strike did not drive the numeral deep enough into the die steel. The worker struck the punch again, but the punch had shifted fractionally between blows, creating a doubled impression.
• Positional correction: The die maker was not satisfied with the placement of a digit after the first punch. The digit was struck again in a slightly adjusted position, leaving traces of the original placement.
• Die movement: The die shifted in its holder between punch strikes. Even a movement of a fraction of a millimeter between blows produces visible doubling on the finished coins.
• Tilted punch: The punch was held at a slightly different angle for the second strike, creating a tilted secondary image.
• Multi-digit logotype misalignment: When the Mint used logotypes containing several digits or the full four-digit date, a second strike of the logotype could displace all of those digits together, creating uniform repunching across the date.

Historical Context

RPDs are found on U.S. coins from the 1790s through 1908. The earliest coins, with dates hand-punched digit by digit, gave the most opportunity for individual digits to be repunched. The Mint moved to date logotypes around 1840, and Error-Ref dates the end of the RPD era for U.S. coins to 1908: from 1909 the date was part of the master hub or master die. Coins with hubbed dates do not produce RPDs because no separate date punching into the working die occurs, and Error-Ref says claims of U.S. repunched dates after 1908 should be met with extreme skepticism. It examines a 1957-D Lincoln cent sold as a repunched 7 and concludes the mark is more likely a die dent or gouge.

The digits involved vary: Error-Ref notes that on older coins one, two or three digits may be repunched, and sometimes all four.

How to Identify a Repunched Date

Detecting an RPD involves examining each digit in the date for evidence of secondary impressions:

• Look for doubled edges: The most visible RPD feature is a digit that appears to have two outlines. The inner or outer edge of a numeral shows a secondary line or shelf where the second punch impression begins.
• Check serifs and terminals: The serifs (finishing strokes) and terminals (endpoints) of date digits provide the clearest diagnostic evidence. A repunched "1" shows a widened or split serif at its base. A repunched "9" shows doubled curves at the top of its loop.
• Note the direction: The secondary image is displaced in a consistent direction relative to the primary for each affected digit. Common classifications include:
  • North/South RPD: The secondary impression is above or below the primary
  • East/West RPD: The secondary is to the left or right
  • Tilted RPD: The secondary is at an angle to the primary
• Examine all four digits: On a coin with individual hand-punched digits, the repunching may affect only one digit, all four digits, or any combination. Each digit was punched separately and could have its own repunching characteristics.
• Use 10x to 20x magnification: While some RPDs are visible at lower magnification, most require at least 10x for reliable detection. A 20x lens reveals the fine details of secondary impressions that confirm a genuine RPD.

RPD vs. Machine Doubling

Machine doubling takes several forms, and worn dies produce a look-alike of their own; Mechanical Doubling covers the whole family.

Machine doubling (strike doubling) produces flat, shelf-like displacement on the date digits. A genuine RPD shows secondary impressions punched into the die, with depth and formed character of their own. Machine doubling is not a die variety; an RPD is.

Collecting Tips

• 1908 and earlier is the territory: RPDs belong to the era when dates were punched into working dies. Large cents, half cents, Seated Liberty coinage and early type coins all carry them.
• Indian Head cents are well documented: Indian Head cent RPDs (1859-1908) are attributed by Snow numbers and FS numbers; examples include the 1882 Snow-1, with parts of a second date visible on both 8s and the 2 (Error-Ref), and the 1861 FS-301, repunched at the last 1 (PCGS). A Lincoln cent sold as an RPD is almost certainly something else.
• Focus on one series: RPD collecting rewards specialization. Choosing one denomination or series and learning its normal date appearance, punch styles, and known varieties produces better results than casually searching across multiple series.
• Pair with other punch varieties: RPDs come from the same kind of hand punching as RPMs and misplaced dates, and a die can carry more than one; Error-Ref shows a 1907 Indian cent with both a repunched 9 and a misplaced date, with the 07 punched into the denticles.
• Die state affects clarity: Early die state coins show the strongest secondary impressions. As the die wears, subtle RPD features erode. When purchasing attributed RPD coins, examine the diagnostic area to confirm the variety features are clearly visible on your specific specimen.
• Cherry-picking: Because RPDs require magnification to identify, they can pass unnoticed in dealer stocks and estate lots. A good loupe and knowledge of the known varieties are what find them.
• Professional attribution: PCGS lists attributed RPDs by FS and Snow numbers (for example, the 1861 RPD FS-301 S-1). Match a coin to a published variety before submitting it.