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SERIES: Barber Dimes 1892-1916
LEVEL: Year, MintMark, & Major Variety

1905-O 10C Micro O (Regular Strike)

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PCGS MS65

Normal O vs Micro O Comparison

PCGS MS63
PCGS #:
94836
Diameter:
17.90 millimeters
Designer:
Charles E. Barber
Weight:
2.50 grams
Edge:
Reeded
Mintage:
3,400,000
Metal Content:
90% Silver, 10% Copper
Auction Record:
$12,650 • PCGS MS65 • 1-1-2005 • Heritage
Rarity and Survival Estimates (Explain)
Grades Survival
Estimate 
Numismatic
Rarity 
Relative Rarity
By Type 
Relative Rarity
By Series 
All Grades 200 R-7.0 1 / 76 1 / 76
60 or Better 20 R-9.1 1 / 76 1 / 76
65 or Better 5 R-9.7 1 / 76 1 / 76
Condition Census (Explain) Show more rows
Pos Grade Thumbnail Pedigree and History
1 MS66 PCGS grade  
2 MS65 PCGS grade
3 MS63 PCGS grade  
3 MS63 PCGS grade  
3 MS63 PCGS grade  
Condition Census (Explain) Show fewer rows
Pos Grade Thumbnail Pedigree and History
1 MS66 PCGS grade  
2 MS65 PCGS grade
3 MS63 PCGS grade  
3 MS63 PCGS grade  
3 MS63 PCGS grade  
3 MS63 estimated grade  
3 MS63 estimated grade  
8 MS62 PCGS grade
8 MS62 estimated grade  
10 AU58 estimated grade  

Ron Guth: The 1905-O Micro O Barber Dime was created when a die sinker used a mintmark punch intended for a quarter dollar which, ironically, is smaller than that used on the dimes.  According to Walter Breen, this variety was discovered by Howard Newcomb circa 1912; yes, that's the same Newcomb who is famous for his reference work on die varieties of 1816-1857 large cents.

This is a relatively scarce variety made all the more popular because it is the only major variety of the series.  The finest example is a single PCGS MS66.


Gordon Wrubel: Quickfinder Notes: The Micro O mint mark is only about half the size of the normal New Orleans issue. This is ironic, as numismatic expert Ron Guth points out above, because this undersize fellow was used on Barber quarters! The reason for this use was the very constricted space between the eagle's tail and the R of QUARTER. The Micro O mint mark is ROUND in shape with very thick side walls and an OVAL center. It's position is EQUIDISTANT and AWAY from the ribbon knot and denticles. The normal size mint mark is OVAL in shape with an OBLONG center. It is placed VERY CLOSE to the ribbon knot.