What is the age and value of a Marlin 32 special model 336 SC Serial Number K15868 GD Condition?

The prefix letter K to your serial number indicate that your Marlin model 336SC (sporting carbine) was made in the year 1953. Without a detailed description of your Marlin rifle's overall condition, it is difficult to assess a value. As a general rule these Marlin rifles will bring between $250 and $400 on today's market depending on overall condition being good or better with a good bore, and wood.