Buffalo nickels* only have the mint mark on the back. You're probably seeing the designer's monogram on the front of the coin.
In any case, a 1920-S nickel is worth about $4 in very worn condition. However, values go up steeply from there. In slightly worn condition, this coin might retail for as much as $100.
(*) FWIW, the coin is a NICKEL rather than "nickle"
a 1920 buffalo nickel is worth about 2.50 because it's not that rare
25 Most Valuable Nickels1.) 1913 Liberty Head V Nickel - Worth $4,408,6502.) 1880 Shield Nickel - Worth $20,0003.) 1924 S Buffalo Nickel - Worth $14,0004.) 1926 S Buffalo Nickel - Worth $7,6005.) 1927 S Buffalo Nickel - Worth $5,0006.) 1881 Shield Nickel - Worth $4,0007.) 1883 Shield Nickel - Worth $3,9008.) 1867 Shield Nickel - Worth $3,6009.) 1920 D Buffalo Nickel - Worth $3,50010.) 1928 D Buffalo Nickel - Worth $3,40011.) 1918 D Buffalo Nickel - Worth $3,30012.) 1925 S Buffalo Nickel - Worth $3,30013.) 1924 D Buffalo Nickel - Worth $3,00014.) 1870 Shield Nickel - Worth $3,00015.) 1920 S Buffalo Nickel - Worth $2,50016.) 1872 Shield Nickel - Worth $2,50017.) 1919 D Buffalo Nickel - Worth $2,35018.) 1885 Liberty Head V Nickel - Worth $2,32819.) 1912 S Liberty Head V Nickel - Worth $1,94520.) 1886 Liberty Head V Nickel - Worth $1,86121.) 1877 Shield Nickel - Worth $1,85422.) 1938 Jefferson Nickel - Worth $1,80023.) 1873 Shield Nickel - Worth $1,80024.) 1874 Shield Nickel - Worth $1,80025.) 1916 D Buffalo Nickel - Worth $1,780
Look at the back under FIVE CENTS to see if it has a mintmark, it makes a big difference in value. Post new question with new information.
The value of a 1920 Indian head nickel can vary depending on its condition and rarity. However, as of now, the average value for a circulated 1920 Indian head nickel is around $2 to $5. Uncirculated coins in good condition can be worth more.
To set things straight, it would be "buffalo" rather than "bufflow". Also it can't be 1820 because the first nickels weren't made till 1866 and buffalo nickels were issued from 1913 to 1938. And finally it can't be silver because buffalo nickels are made from copper-nickel, like all other nickels except the famous "war nickels" from 1942-45.If your coin is dated 1920, please see the Related Question for more information.
a 1920 buffalo nickel is worth about 2.50 because it's not that rare
25 Most Valuable Nickels1.) 1913 Liberty Head V Nickel - Worth $4,408,6502.) 1880 Shield Nickel - Worth $20,0003.) 1924 S Buffalo Nickel - Worth $14,0004.) 1926 S Buffalo Nickel - Worth $7,6005.) 1927 S Buffalo Nickel - Worth $5,0006.) 1881 Shield Nickel - Worth $4,0007.) 1883 Shield Nickel - Worth $3,9008.) 1867 Shield Nickel - Worth $3,6009.) 1920 D Buffalo Nickel - Worth $3,50010.) 1928 D Buffalo Nickel - Worth $3,40011.) 1918 D Buffalo Nickel - Worth $3,30012.) 1925 S Buffalo Nickel - Worth $3,30013.) 1924 D Buffalo Nickel - Worth $3,00014.) 1870 Shield Nickel - Worth $3,00015.) 1920 S Buffalo Nickel - Worth $2,50016.) 1872 Shield Nickel - Worth $2,50017.) 1919 D Buffalo Nickel - Worth $2,35018.) 1885 Liberty Head V Nickel - Worth $2,32819.) 1912 S Liberty Head V Nickel - Worth $1,94520.) 1886 Liberty Head V Nickel - Worth $1,86121.) 1877 Shield Nickel - Worth $1,85422.) 1938 Jefferson Nickel - Worth $1,80023.) 1873 Shield Nickel - Worth $1,80024.) 1874 Shield Nickel - Worth $1,80025.) 1916 D Buffalo Nickel - Worth $1,780
The coin is called an Indian head nickel or a buffalo nickel, not a "buffalo head". It shows the entire buffalo, not just its head. Please see the question "What is the value of a 1920 US nickel?" for more information.
A 1920 Buffalo nickel is common, assuming it's circulated and has no mintmark values for coins in average circulated condition are $2.00-$8.00.
None at all, no buffalo's ever had silver
I suspect the number is 1920, which makes it a regular Buffalo nickel, and it's worth about one dollar.
This famous design is also frequently called an Indian head nickel. Please see the question "What is the value of a 1920 US nickel?" for more information.
The Buffalo/Indian Head Nickel's composition was 75% copper and 25% nickel. The only war-time silver nickels were from 1942 to 1945. A well-circulated 1920 nickel values from 5 cents to 2 dollars. If never circulated with original luster and full horn in reverse could be over $100 for a 1920-D. If the color is silver toned or shiny then it could be the original strike or has been cleaned or dipped in a cleaner.
Please don't assume that because a coin is old it has to be made out of silver. Buffalo nickels were issued from 1913 to 1938 and all were struck in an alloy of copper and nickel. There has never been a silver buffalo nickel. If you can see the coin's date on the front, please enter a new question in the form "What is the value of a <date> US nickel" in the large box at the top of the page and click the GO button. (<date> is of course your coin's actual date, like 1920 or 1936) If the date isn't visible on the front (a common problem with buffalo nickels) it's called a "cull" and is worth at most 10 or 15 cents.
Look at the back under FIVE CENTS to see if it has a mintmark, it makes a big difference in value. Post new question with new information.
The coins are also called buffalo nickels but none of them were struck in silver.
In average circulated condition, it's worth about a dollar. If the buffalo's horn is full & complete, it's worth about $10 If there is an "S" mintmark, on the back, beneath FIVE CENTS, then in average circulated condition, it's worth about $5. And if the buffalo's horn is full & complete, it's worth about $200 About $3 in worn condition, $5 with moderate wear, $12 with only slight wear