The 2007 Quarter Value Guide: What's Yours Worth?

The double denomination error is one of the rarest and most dramatic failures possible at the U.S. Mint. It occurs when a planchet intended for one denomination is fed into the press for another — in this case, a nickel-format die striking a quarter-design planchet, or vice versa. The 2007-D Montana is the most publicized example from the series.

On the affected coin, you will notice a mismatch between the planchet's physical dimensions and the die's intended design field. The coin may appear smaller or have different edge characteristics than a standard quarter, with Jefferson's portrait visible alongside the Montana state design on the reverse — a jarring juxtaposition that immediately signals a major error.

Collectors prize these coins for their rarity and the sheer improbability of their creation. A 2007-D Montana double denomination example in MS-65 condition sold for approximately $9,600 at Heritage Auctions, confirming this as the top error in the 2007 series. Certification by PCGS or NGC is essential to authenticate the error and maximize resale value.

The partial tilted collar error occurs when the collar die — the ring that surrounds the planchet during striking to form the coin's edge — is not fully deployed or is canted at an angle. When the hammer die strikes, the unsupported portion of the planchet squirts outward, creating a distinctive stair-step or terraced effect along part of the coin's rim. The error is most visible from the edge view.

On 2007-P Montana quarters bearing this error, one section of the rim will show the normal reeded edge giving way to a series of horizontal steps or a raised shelf — the telltale diagnostic of a tilted collar strike. The obverse and reverse designs remain largely intact, but the coin's profile is noticeably asymmetric. The degree of tilt determines how dramatic the error appears.

Because the collar controls edge formation, tilted collar errors affect the coin's geometry in ways that are immediately apparent to an experienced collector. A 2007-P Montana quarter in MS-65 with this error sold for $725, making it among the more accessible major errors in the 2007 series while still commanding a strong premium over a common example.

Lamination errors arise from impurities or gas pockets trapped within the planchet's clad layers during metal fabrication. These inclusions weaken the bond between the outer copper-nickel clad layer and the pure copper core beneath. When the die strikes the planchet at high pressure, the weakened areas blister, bubble, or delaminate — sometimes popping open like a blister to reveal the copper interior beneath the nickel surface.

On the 2007-P Idaho quarter examples displaying this error, affected areas show raised bubbles or fractured, flaking sections of the obverse or reverse surface. In severe cases, entire sections of the clad layer peel away after striking, exposing a contrasting copper-orange zone. Lamination errors occurring across the design's primary field — Washington's portrait or the Idaho peregrine falcon — are the most visually striking and most sought-after.

A documented 2007-P Idaho quarter in MS-64 with prominent lamination bubbling sold for $915 in 2021. The error is a pre-mint planchet defect, making every example unique in the size and location of the delaminated zone. PCGS and NGC both attribute lamination errors under their error coin designation system, and specimens with significant affected areas earn the highest premiums.

Die chip errors occur when small fragments break away from the working die during production, leaving a void in the die face. When the die subsequently strikes a planchet, metal flows into that void and creates a small raised lump or blob on the finished coin's surface. Unlike die cracks (which appear as raised lines), die chips produce localized raised bumps at specific points.

The 2007-D Utah quarter die chip errors appear on both the obverse (Washington portrait side) and the reverse (locomotive design) simultaneously — a diagnostic described as "Obv/Rev" die chip in specialist listings, indicating the same die pair produced chips on both faces. Locating a chip directly on Washington's portrait or on the primary locomotive design significantly elevates value over chips in the lettering or field.

In MS-66 condition, a 2007-D Utah quarter with an obverse/reverse die chip sold for $1,035 in 2022. Die chips are generally more common than double denomination errors but can still command strong premiums when the chip is prominent, well-positioned, and the coin grades at MS-65 or higher. Always verify with a major grading service for authentication.

Two distinct errors are grouped here because they are the most visually striking varieties on the 2007 Washington state quarter. The doubled die reverse (DDR) is a hub-derived error in which the working die received two impressions from the master hub at slightly different rotational positions, embedding a doubled image directly into the die steel. Every coin struck from that die carries the same doubling.

The off-center double struck variety is a mechanical error — the coin was struck a second time with the planchet partially ejected, placing the second design impression off-center. This produces a coin with one area of blank planchet and two overlapping images. An example of the 2007-P Washington quarter struck 90% off center has been documented. The doubled die reverse on the San Francisco proof version — visible in the mint mark area — sold for $1,522 in 2023.

Both errors require expert identification. For the DDR, look for distinct shelf-like doubling in "E PLURIBUS UNUM," the state name, or the fish and mountain imagery on the reverse. For the off-center strike, the blank planchet section is obvious and the percentage off-center determines value — errors above 50% off-center are the most prized, provided the date and mint mark remain visible.