The provided search results do not contain relevant information regarding the 1941 nickel. The following answer is based on general numismatic knowledge.
A 1941 nickel with no mint mark was struck at the Philadelphia Mint. During this period in United States coinage, it was standard practice for coins produced in Philadelphia to not carry a mint mark. Mint marks for other facilities, such as 'D' for the Denver Mint or 'S' for the San Francisco Mint, would be located on the reverse side of the coin, to the right of Monticello. Therefore, the absence of a mint mark on your 1941 nickel simply identifies its place of origin as Philadelphia.
The 1941 Jefferson nickel is composed of 75% copper and 25% nickel. This is the standard pre-war composition. This is noteworthy because partway through the following year, in 1942, the composition was changed to an alloy of copper, silver, and manganese to conserve nickel for the war effort. These "wartime nickels" are distinguished by a large mint mark placed above Monticello on the reverse.
Due to a very large mintage of over 203 million coins from the Philadelphia Mint in 1941, this coin is quite common. In circulated condition, it generally carries little to no monetary value beyond its face value. However, for collectors, its value is highly dependent on its state of preservation. A 1941 nickel in uncirculated, or mint, condition can be worth a few dollars. The value increases substantially for high-grade examples, particularly those that exhibit a sharp strike with "Full Steps" visible on Monticello.
