Based on the information provided, a 1941 nickel with no mint mark was minted in Philadelphia. These coins are very common, with a mintage of over 203,265,000, so their value is highly dependent on their physical condition.
In most cases, a 1941 nickel found in circulation will be worn and is worth only its face value of five cents. The value only begins to increase for coins that are in uncirculated, or "Mint State," condition. These are coins that were never used as money and show no signs of wear.
The value of an uncirculated 1941 nickel without a mint mark can range from a few dollars to much more for coins in pristine condition. A critical factor for collectors that significantly increases the coin's worth is the "Full Steps" designation. This refers to coins that were struck so well that all the steps on Monticello on the reverse side are clearly visible and complete. A 1941 Philadelphia nickel with Full Steps can be worth over $1,000 in a very high grade, such as MS67.
There are also proof versions of the 1941 nickel, which also have no mint mark. These were specially struck for collectors with a mirror-like finish and are considerably more valuable, potentially worth thousands of dollars in top condition. However, these are not typically found in circulation. In summary, while most 1941 nickels with no mint mark are worth face value, high-grade examples, especially those with Full Steps, can be quite valuable to collectors.
