Diagnostic Controls & Presets WWII Silver Key Overdate
Diagnostic Forensic Readings
Forensic Attribution Diagnostic
Real-time metallurgical and die variety cross-examination verified against certified populations.
Technical Breakdown: Physics, Metallurgy & Die Diagnostics
Nickel was a vital strategic war metal for armor plating; Congress authorized silver to conserve nickel stocks.
In late 1942, an unused 1942 obverse master hub was freshly sunk with a 1943 logotype, leaving the '2' clearly visible.
Documented Benchmark Auction Records
Tied for finest certified in Full Steps condition; blazing satin mint bloom with complete crisp staircase on Monticello.
Gem uncirculated with prominent underdigit '2' and flawless oversized 'P' mintmark above Monticello.
Cherrypicked from an unsearched bank roll; classic war nickel greenish tone with razor-sharp overdate loop.
Frequently Asked Questions
What is the 1943/2-P Jefferson Nickel?
The 1943/2-P is one of the most famous and valuable 20th-century variety coins in US numismatics. Created during World War II at the Philadelphia Mint, it was struck using a working die made from a hub that had been impressed with both a 1942 date and a 1943 date.
How can I identify the 1943/2-P overdate?
Examine the final digit of the date under 10x magnification. On genuine 1943/2 coins (cataloged as FS-101), the curved upper loop and parts of the crossbar of the underlying numeral '2' are distinctly visible protruding from inside the upper curve of the '3'.
Why were wartime nickels made of silver?
During World War II, nickel was urgently needed for stainless steel weapons and tank armor plating. Under the Act of March 27, 1942, Congress authorized the Mint to remove all nickel from five-cent coins and replace it with an alloy of 56% copper, 35% silver, and 9% manganese.
What does the large 'P' above Monticello mean?
To easily distinguish wartime silver nickels from pre-war base metal nickels (so they could be withdrawn and melted after the war), the Mint placed a giant mintmark directly above the dome of Monticello on the reverse. The 1942-1945 silver nickels were the very first US coins in history to bear a 'P' mintmark for Philadelphia!
What does 'Full Steps' (FS) mean on a war nickel?
Monticello on the reverse has a staircase leading to its entrance. Coins that were struck with such exceptional force that 5 or 6 complete, unbroken horizontal step lines are visible receive the 'FS' designation from PCGS and NGC, multiplying the coin's value by 3x to 10x.
How common is machine doubling on 1943 nickels?
Machine doubling (strike doubling) is very common on 1943 nickels. It looks like a flat, shelf-like shadow next to the digits caused by die vibration, rather than a genuine overdate. Only the FS-101 with the distinctive loop of the '2' commands a true premium.
How much is a 1943/2-P Jefferson Nickel worth?
Even in worn circulated condition (Good-4 to Fine-12), an authentic 1943/2-P is worth $30 to $50. In Choice About Uncirculated (AU-55), it sells for $120 to $180. In Mint State MS-64, it brings $350 to $450, while Gem MS-66 Full Steps examples command $2,000 to over $8,500 at auction.