Title: Openai/6928c8bd-a418-800a-b930-04098eeef67a - freem

URL Source: https://freemwiki.com/index.php?oldid=593771&title=Openai%2F6928c8bd-a418-800a-b930-04098eeef67a

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_This conversation was exported from ChatGPT_[[1]](https://freemwiki.com/index.php?oldid=593771&title=Openai%2F6928c8bd-a418-800a-b930-04098eeef67a#cite_note-1)

## gpt-5-1[[edit](https://freemwiki.com/index.php?title=Openai/6928c8bd-a418-800a-b930-04098eeef67a&veaction=edit&section=1 "Edit section: gpt-5-1") | [edit source](https://freemwiki.com/index.php?title=Openai/6928c8bd-a418-800a-b930-04098eeef67a&action=edit&section=1 "Edit section's source code: gpt-5-1")]

### User: When and what coins did the Philadelphia Mint put a mint mark on coins with a “P?”[[edit](https://freemwiki.com/index.php?title=Openai/6928c8bd-a418-800a-b930-04098eeef67a&veaction=edit&section=2 "Edit section: User: When and what coins did the Philadelphia Mint put a mint mark on coins with a “P?”") | [edit source](https://freemwiki.com/index.php?title=Openai/6928c8bd-a418-800a-b930-04098eeef67a&action=edit&section=2 "Edit section's source code: User: When and what coins did the Philadelphia Mint put a mint mark on coins with a “P?”")]

When and what coins did the Philadelphia Mint put a mint mark on coins with a “P?”

### Assistant: Here’s the complete, accurate timeline of when the Philadelphia Mint used the “P” mint mark, and on which coins.[[edit](https://freemwiki.com/index.php?title=Openai/6928c8bd-a418-800a-b930-04098eeef67a&veaction=edit&section=3 "Edit section: Assistant: Here’s the complete, accurate timeline of when the Philadelphia Mint used the “P” mint mark, and on which coins.") | [edit source](https://freemwiki.com/index.php?title=Openai/6928c8bd-a418-800a-b930-04098eeef67a&action=edit&section=3 "Edit section's source code: Assistant: Here’s the complete, accurate timeline of when the Philadelphia Mint used the “P” mint mark, and on which coins.")]

Here’s the complete, accurate timeline of when the Philadelphia Mint used the “P” mint mark, and on which coins. Philadelphia normally struck U.S. coins without a mint mark, so anytime you see a “P”, it’s a special case.

### ✅ Full History of the “P” Mint Mark[[edit](https://freemwiki.com/index.php?title=Openai/6928c8bd-a418-800a-b930-04098eeef67a&veaction=edit&section=4 "Edit section: ✅ Full History of the “P” Mint Mark") | [edit source](https://freemwiki.com/index.php?title=Openai/6928c8bd-a418-800a-b930-04098eeef67a&action=edit&section=4 "Edit section's source code: ✅ Full History of the “P” Mint Mark")]

![https://www\.fcmint\.com/pub/media/catalog/product/cache/afad95d7734d2fa6d0a8ba78597182b7/r/a/rare\_p\_mint\_marks\_wallet\_1200\.jpg](https://www/.fcmint/.com/pub/media/catalog/product/cache/afad95d7734d2fa6d0a8ba78597182b7/r/a/rare/_p/_mint/_marks/_wallet/_1200/.jpg)[[2]](https://freemwiki.com/index.php?oldid=593771&title=Openai%2F6928c8bd-a418-800a-b930-04098eeef67a#cite_note-2) ![https://i\.usacoinbook\.com/us\-coins/1980\-lincoln\-memorial\-cent\.jpg](https://i/.usacoinbook/.com/us/-coins/1980/-lincoln/-memorial/-cent/.jpg)[[3]](https://freemwiki.com/index.php?oldid=593771&title=Openai%2F6928c8bd-a418-800a-b930-04098eeef67a#cite_note-3) ![https://profilecoins\.com/cdn/shop/products/442R\.AC\-rev\.jpg?v=1697045122&width=2048](https://profilecoins/.com/cdn/shop/products/442R/.AC/-rev/.jpg?v=1697045122&width=2048)[[4]](https://freemwiki.com/index.php?oldid=593771&title=Openai%2F6928c8bd-a418-800a-b930-04098eeef67a#cite_note-4) 5

### 🕰️ 1. WWII Silver Nickels (First Ever “P”) — 1942–1945[[edit](https://freemwiki.com/index.php?title=Openai/6928c8bd-a418-800a-b930-04098eeef67a&veaction=edit&section=5 "Edit section: 🕰️ 1. WWII Silver Nickels (First Ever “P”) — 1942–1945") | [edit source](https://freemwiki.com/index.php?title=Openai/6928c8bd-a418-800a-b930-04098eeef67a&action=edit&section=5 "Edit section's source code: 🕰️ 1. WWII Silver Nickels (First Ever “P”) — 1942–1945")]

Coins: Jefferson “Wartime” Nickels Mint mark location: Large letter above Monticello

*   1942 (silver type only)
*   1943
*   1944
*   1945

This was the first time in U.S. history Philadelphia used a mint mark. Reason: to identify the special 35% silver alloy during wartime.

### 🕰️ 2. Susan B. Anthony Dollars — Since 1979[[edit](https://freemwiki.com/index.php?title=Openai/6928c8bd-a418-800a-b930-04098eeef67a&veaction=edit&section=6 "Edit section: 🕰️ 2. Susan B. Anthony Dollars — Since 1979") | [edit source](https://freemwiki.com/index.php?title=Openai/6928c8bd-a418-800a-b930-04098eeef67a&action=edit&section=6 "Edit section's source code: 🕰️ 2. Susan B. Anthony Dollars — Since 1979")]

Coins: SBA Dollars (1979–1981, 1999) Mint mark location: Left of the portrait

Starting in 1979, Philadelphia put its “P” on the new dollar coin because the design needed clear mint identification.

### 🕰️ 3. All Denominations Except Cents — Since 1980[[edit](https://freemwiki.com/index.php?title=Openai/6928c8bd-a418-800a-b930-04098eeef67a&veaction=edit&section=7 "Edit section: 🕰️ 3. All Denominations Except Cents — Since 1980") | [edit source](https://freemwiki.com/index.php?title=Openai/6928c8bd-a418-800a-b930-04098eeef67a&action=edit&section=7 "Edit section's source code: 🕰️ 3. All Denominations Except Cents — Since 1980")]

Coins:

*   Nickel (Jefferson) – P appears starting 1980
*   Dime (Roosevelt) – P appears starting 1980
*   Quarter (Washington) – P appears starting 1980
*   Half Dollar (Kennedy) – P appears starting 1980
*   Dollar Coins (SBA, Sacagawea, Presidential, Native American, Innovation dollars) – always include P when struck in Philly

Before 1980, Philadelphia put no mint mark on these coins.

### 🕰️ 4. A One-Year Special: The Lincoln Cent “P” — 2017 Only[[edit](https://freemwiki.com/index.php?title=Openai/6928c8bd-a418-800a-b930-04098eeef67a&veaction=edit&section=8 "Edit section: 🕰️ 4. A One-Year Special: The Lincoln Cent “P” — 2017 Only") | [edit source](https://freemwiki.com/index.php?title=Openai/6928c8bd-a418-800a-b930-04098eeef67a&action=edit&section=8 "Edit section's source code: 🕰️ 4. A One-Year Special: The Lincoln Cent “P” — 2017 Only")]

Coins: Lincoln Shield Cent Mint mark location: Standard position below the date

In 2017, for the U.S. Mint’s 225th Anniversary, Philadelphia added a “P” to cents for the first and only year ever.

*   2017 cents are the only Lincoln cents in history with a P mint mark.

### 🕰️ Summary Table[[edit](https://freemwiki.com/index.php?title=Openai/6928c8bd-a418-800a-b930-04098eeef67a&veaction=edit&section=9 "Edit section: 🕰️ Summary Table") | [edit source](https://freemwiki.com/index.php?title=Openai/6928c8bd-a418-800a-b930-04098eeef67a&action=edit&section=9 "Edit section's source code: 🕰️ Summary Table")]

| Denomination | First Year With “P” | Notes | | ------------------------------ | ------------------- | -------------------------------- | | Nickel (WWII silver) | 1942–45 only | Special war alloy | | Dollar coins | 1979 | SBA, then all later dollars | | All regular coins except cents | 1980 | Nickels, dimes, quarters, halves | | Lincoln cent | 2017 only | Anniversary issue |

If you want, I can also show:

*   Which coins should never have a P (so you can spot errors)
*   Values of P-mint coins you have
*   Photos of the mint mark positions on each denomination

## References[[edit](https://freemwiki.com/index.php?title=Openai/6928c8bd-a418-800a-b930-04098eeef67a&veaction=edit&section=10 "Edit section: References") | [edit source](https://freemwiki.com/index.php?title=Openai/6928c8bd-a418-800a-b930-04098eeef67a&action=edit&section=10 "Edit section's source code: References")]

1.   [↑](https://freemwiki.com/index.php?oldid=593771&title=Openai%2F6928c8bd-a418-800a-b930-04098eeef67a#cite_ref-1 "Jump up")["Philadelphia mint mark P"](https://chatgpt.com/share/6928c8bd-a418-800a-b930-04098eeef67a). ChatGPT. Retrieved 2025-11-28.
2.   [↑](https://freemwiki.com/index.php?oldid=593771&title=Openai%2F6928c8bd-a418-800a-b930-04098eeef67a#cite_ref-2 "Jump up")["https://www\.fcmint\.com/pub/media/catalog/product/cache/afad95d7734d2fa6d0a8ba78597182b7/r/a/rare\_p\_mint\_marks\_wallet\_1200\.jpg"](https://www.fcmint.com/pub/media/catalog/product/cache/afad95d7734d2fa6d0a8ba78597182b7/r/a/rare_p_mint_marks_wallet_1200.jpg). fcmint.com. Retrieved 2025-11-28.
3.   [↑](https://freemwiki.com/index.php?oldid=593771&title=Openai%2F6928c8bd-a418-800a-b930-04098eeef67a#cite_ref-3 "Jump up")["https://i\.usacoinbook\.com/us\-coins/1980\-lincoln\-memorial\-cent\.jpg"](https://images.openai.com/static-rsc-1/g-6TcHZ1chb5gB_B5iIphq340nrmr3U5PWJRmFWBWLijNtF6JZBXkbJOeYmrRcNHYUY7sEtQjGeR8XmiGPEO5fxda9VsR2x3bdlVDgAZZzpUp4i-DnCaFPkuUZsCYYkpBwtONRFH8G3hF42qSErq2A). images.openai.com. Retrieved 2025-11-28.
4.   [↑](https://freemwiki.com/index.php?oldid=593771&title=Openai%2F6928c8bd-a418-800a-b930-04098eeef67a#cite_ref-4 "Jump up")["https://profilecoins\.com/cdn/shop/products/442R\.AC\-rev\.jpg?v=1697045122&width=2048"](https://images.openai.com/static-rsc-1/OGlkIyfBvyAH039pSA_llxV3yMAzqqWvCHkInZHwJUy_pHiBcKqGNH7iUZgD_UHTibKduP8o68rgGk1shFJGZ3baGM4BdkXpAl3sjuPMTo0uu_UjCcbuQdbYeDyb3bwyg8LQ7pknSTsqyUQuUI0Dfw). images.openai.com. Retrieved 2025-11-28.