No mintmark is shown; all were produced at Philadelphia.    From Wordnik.com.  [Capped Bust, Lettered Edge Half Dollar, 1807-1836 : Coin Guide] Reference

Without Motto Saints were minted in Philadelphia and Denver; the D mintmark is located above the date.    From Wordnik.com.  [Saint-Gaudens Double Eagle, Without Motto, 1907-1908 : Coin Guide] Reference

Liberty Seated quarters were minted at Philadelphia and New Orleans; the O mintmark is located above QUAR.    From Wordnik.com.  [Liberty Seated Quarter, No Motto, No Drapery, 1838-1840 : Coin Guide] Reference

Silver Kennedy half dollars were minted at Philadelphia and Denver; the D mintmark is to the left of the bottom tip of the olive branch.    From Wordnik.com.  [Kennedy Half Dollar, Silver, 1964 : Coin Guide] Reference

Stars, No Drapery half dimes were produced at Philadelphia and New Orleans; the O mintmark is located below DIME and above the bows of the ribbon.    From Wordnik.com.  [Liberty Seated Half Dime, Stars, No Drapery 1838-1840 : Coin Guide] Reference

The design, which also incorporates The Perth Mint’s ‘P’ mintmark, is struck in ‘high relief’ on the 1oz coin.    From Wordnik.com.  [The Perth Mint – New Product Releases : Coin Collecting News] Reference

No mintmark is shown on the coin.    From Wordnik.com.  [Draped Bust Small Eagle Quarter, 1796 : Coin Guide] Reference

Only one Morgan in twelve seen by PCGS and NGC bears the CC mintmark.    From Wordnik.com.  [Those Magical CC Morgans : Coin Collecting News] Reference

All Matron Head cents were minted at Philadelphia and display no mintmark.    From Wordnik.com.  [Matron Head Large Cent, 1816-1835 : Coin Guide] Reference

Type 1 1981 coins have an open rounded mintmark, Type 2 an open flat mintmark.    From Wordnik.com.  [Susan B. Anthony Dollar, 1979-1999 : Coin Guide] Reference

No denomination or mintmark appears on the coins; all were minted in Philadelphia.    From Wordnik.com.  [Draped Bust Half Dime, Heraldic Eagle, 1800-1805 : Coin Guide] Reference

All coins were produced at Philadelphia and have neither mintmark nor denomination.    From Wordnik.com.  [Draped Bust Dollar, Heraldic Eagle, 1798-1804 : Coin Guide] Reference

Type 1 coins for 1979 have a filled S mintmark, Type 2 coins have a open, rounded mintmark.    From Wordnik.com.  [Susan B. Anthony Dollar, 1979-1999 : Coin Guide] Reference

Just enough of the exergue beneath the E C in FIVE CENTS to confirm that no mintmark is present.    From Wordnik.com.  [Unusual Items: 1913 Buffalo Nickel Struck on a Dime Planchet : Coin Collecting News] Reference

The edge is lettered, and no denomination or mintmark appears on the coins; all were minted in Philadelphia.    From Wordnik.com.  [Draped Bust Dollar, Small Eagle, 1795-1798 : Coin Guide] Reference

In particular, I was startled by the boldness of the numerals and the relatively high relief of the ‘S’ mintmark.    From Wordnik.com.  [World War 2 Penny Errors Star at ANA Convention, Part 1: 1943-S Copper trades on the bourse floor : Coin Collecting News] Reference

The Shield nickel has dentils along the rim of both sides, and all were struck at Philadelphia so none display a mintmark.    From Wordnik.com.  [Shield Nickel With Rays, 1866-1867 : Coin Guide] Reference

It was nice to see a real mid grade unc., really well struck for an 1856-S, with a very interesting re-punched S mintmark.    From Wordnik.com.  [Platinum Night was Golden; Bellwether Sale Sparks Markets for U.S. Coin Rarities : Coin Collecting News] Reference

Hong Kong in this case was simply a mintmark, and Shanghai indicated that it was struck to the standard of the Shanghai tael.    From Wordnik.com.  [CHAMPION GALLERIES JUNE HONG KONG AUCTION FULL OF CHINESE RARITIES : Coin Collecting News] Reference

This is certainly one of the very finest in existence of this exceedingly important date and mintmark, quite possibly the finest.    From Wordnik.com.  [The Amazing Eliasberg 1889-CC Dollar, MS68 : Coin Collecting News] Reference

· 1892-O Very Choice Deep Mirror Proof-like Uncirculated-This coin really looks like a Proof that was struck with the “O” mintmark.    From Wordnik.com.  [Coin Dealer Julian Leidman Victim of Vehicle Burglary. Reward Grows to $156,000 : Coin Collecting News] Reference

Varieties:Approximately 30 doubled-die, repunched mintmark, and other style varieties have been identified, on both circulation and proof coins.    From Wordnik.com.  [Roosevelt Silver Dime 1946-1964 : Coin Guide] Reference

Varieties: Approximately 30 doubled-die, repunched mintmark, and other style varieties have been identified, on both circulation and proof coins.    From Wordnik.com.  [Roosevelt Silver Dime 1946-1964 : Coin Guide] Reference

In the latter part of 1942, and in 1943, 1944, and 1945, D, S, and P for Philadelphia, the first appearance of a mintmark for that mint on a U.S. coin were placed on the reverse, above the building, to indicate the changed metal content.    From Wordnik.com.  [Jefferson Nickel, 1938-2003 : Coin Guide] Reference

In the latter part of 1942, and in 1943, 1944, and 1945, D, S, and P (for Philadelphia, the first appearance of a mintmark for that mint on a U.S. coin) were placed on the reverse, above the building, to indicate the changed metal content.    From Wordnik.com.  [Jefferson Nickel, 1938-2003 : Coin Guide] Reference

It will be the centerpiece of a 150-coin date and mintmark display of Types I, II and III Liberty Head Double Eagles from 1850 to 1907 presented by Monaco Rare Coins of Newport Beach, California at booth 644 in the Baltimore Convention Center.    From Wordnik.com.  [Superb 1861-P Paquet Reverse Double Eagle at ANA Convention : Coin Collecting News] Reference

Each mintmark designated which city the dollar was minted in.    From Wordnik.com.  [ReadABlog.com New Blogs and RSS Feeds] Reference

The mintmark can be found on the back of the coin right below the eagle's tail feathers.    From Wordnik.com.  [ReadABlog.com New Blogs and RSS Feeds] Reference

· 1893-S PCGS MS64, Very Choice Uncirculated, Triple “S”-Very Choice Uncirculated, Triple “S” mintmark, quite scarce.    From Wordnik.com.  [Coin Dealer Julian Leidman Victim of Vehicle Burglary. Reward Grows to $156,000 : Coin Collecting News] Reference

· 1893-S PCGS MS64, Very Choice Uncirculated, Triple “S” - Very Choice Uncirculated, Triple “S” mintmark, quite scarce.    From Wordnik.com.  [Coin Dealer Julian Leidman Victim of Vehicle Burglary. Reward Grows to $156,000 : Coin Collecting News] Reference

Historic Coin Press No. 1 will be in operation throughout the day minting the 150th Anniversary Pony Express Medallions, with all medallions bearing the famous "CC" mintmark.    From Wordnik.com.  [Nevada Appeal - Top Stories] Reference

They're just from a few different sites I've been surfing lately that are generally good for information like this ... lowest price tags, let's concentrate on those without any mintmark at all-Philadelphia.    From Wordnik.com.  [ReadABlog.com New Blogs and RSS Feeds] Reference

A commemorative mintmark coin released by the Royal Australian Mint.    From Wordnik.com.  [Australian Government Media Releases [All Portfolios]] Reference

Of more general interest to the non-specialist are the 1878 seven/eight tail feathers versions; the 1878/1879/1880 reverse varieties; the 1879-CC/CC; 1880/79-O and S overdates; 1882-O/S; 1887/6 O and Philadelphia overdates; 1888-O double die obverse; 1899-O Micro mintmark; 1900 O/CC; 1901 double die reverse; and the 1903-S Micro S mintmark.    From Wordnik.com.  [Morgan Dollar, 1878-1921 : Coin Guide] Reference

150th Anniversary Pony Express Medallions, with all medallions bearing the famous "CC" mintmark.    From Wordnik.com.  [Around Carson News and Updates] Reference

Wide, clear, under mintmark.    From Wordnik.com.  [Coin Dealer Julian Leidman Victim of Vehicle Burglary. Reward Grows to $156,000 : Coin Collecting News] Reference