It's a 1955 since it has the 'N' prefix. I would guess that you could get $350 for it in good shape at auction. But I'm just guessing. I have a 1956 model with the 'P' prefix.
The letter U which is a prefix to your serial number is used to date the production of your Marlin lever action rifle.In this case the letter U indicates that your rifle was made by marlin in the time frame of 1960-august of 1961.
The Marlin 1895 with the serial number MR96524F was manufactured in 2003. Marlin used a specific serial number prefix system to indicate the year of production, and the "MR" prefix corresponds to that year.
See the link below. You will need the serial number, including any letter prefix.
The H prefix to your serial number indicates that your marlin model 336A was made by marlin in 1951.
The W prefix to your serial number indicates that your marlin 336 was made in 1963.
The W prefix to your serial number dates your marlin model 336 to 1963.
Your marlin model 39A with the prefix letter S to the serial number,dates your marlin to the years 1958-1959.
The K prefix to your serial number indicates that your marlin model 336RC(regular carbine) was made by marlin in 1953.
The V prefix to the serial number dates your marlin to 1961-aug.1962.
The H prefix to your serial number indicates that your Marlin model 39A was made in the year 1951.
With the letter J prefix to your serial number,this Indicates that your Marlin rifle was made in the year 1952.
The W prefix to your serial number indicates that your Marlin model 336 was made in the year 1963.