Is there a Design Pattern for supporting different permutations object?

Version 1

public class myOjbect {

  public string field1 { get; set; } /* requirements: max length 20 */
  public int field2 { get; set; }
  . . .
  public decimal field200 { get; set; }
}

Version 2

public class myObject {

  public string field1 { get; set; } /* requirements: max length 40 */
  public int field2 { get; set; }
  . . .
  public double field200 { get; set; } /* changed data types */
  . . ./* 10 new properties */
  public double field210 { get; set; } 
}

of course I could just have separate objects, but thought there might be a good pattern for this sort of thing.