It's a grading term.
EF (or XF) stands for Extremely Fine, and 40 is a numeric subgrade within that broader class. It's just below AU - Almost Uncirculated - and means that the coin has been in circulation but has only very slight visible wear.
1909 VDB - extra fine condition (EF40) - $20 1909 -S VDB - EF40 - $ 1500 1909 - EF40 - $7.00 1909-S - EF40 - $275
"EF40" combines an acronym for "extremely fine" with a number grade of "40" from the Sheldon grading scale.
If its mint state is in extra fine condition (EF40), its value is: $275.00.
The abbreviations G-4, F-12 & EF-40 are numismatic grades and can be used on any coin.
August 11, 2009 The 1943-P Walking Liberty half dollar is not considered to be a scarce coin. The circulated and uncirculated values of this coin are shown in the following list: Circulated Grades..........1943-P G4....................................$8 VF30.................................$11 EF40.................................$12 EF40.................................$30 Uncirculated GradesMS60.................................$30 MS63.................................$42 MS64.................................$58 MS65.................................$145 MS66.................................$260 MS67.................................$900 MS68.................................10,000
These are beautiful coins - a 1924 Saint-Gaudens $20 Double Eagle coin is worth in extra fine condition (EF40): $1225.
July 11, 2009 There were 10,975 dimes minted in 1802 at the mint in Philadelphia. The value of this coin is as follows: G4.................$1900 F12................$3250 VF30..............$6500 EF40.............$10,000 EF55.............$23,500 MS60.............$35,000
A 1909 V.D.B. United States Cent is worth_______in it's condition... G4-$12.00 VG8-$13.00 F12-$14.00 VF20-$15.00 EF40-$16.00 AU50-$18.00 MS60-$20.00 MS63-$28.00
This coin graded EF40 is worth around $101. You may get more or less when you take it to a collector.If the coin has been certified & slabbed by one of the major grading services, the label should read "With EF-40 details" not graded EF-40 with details. This usually means the coin has been cleaned or has other damage but the coin does have the details of a EF-40 grade. Current average retail value of a EF-40 1878-CC Morgan, as of 7-1-11, is $90.00-$100.00 this is one of the more common Carson-City Mint Morgans
Morgan Dollars were not minted until 1878. In 1869 Seated Liberty dollars were being struck at Philadelphia. The circluated values for this coin are shown in the following list: Circulated Grades..........1869 G4.................................$250 F12................................$350 EF40..............................$575 AU55..............................$1,500
August 23, 2009 The circulated and uncirculated values for this coin are shown in the following list: Circulated Grades.........1924-S G4...................................$24 VF30...............................$44 EF40...............................$50 AU55...............................$75 Uncirculated GradesMS60...............................$200 MS63...............................$550 MS64...............................$1500 MS65...............................$9500 MS66...............................$37,500
August 3, 2009 All of the 1901 Quarter Eagles were minted in Philadelphia. The circulated and uncirculated values for this coin are shown in the following list: Circulated Grades.........1901 VF30..............................$250 EF40..............................$280 AU55..............................$315 Uncirculated GradesMS60..............................$425 MS62..............................$610 MS63..............................$965 MS64..............................$1,215 MS65..............................$2,900 MS66..............................$3,350 MS67..............................$10,000