Issue with Prefab instantiate and script not working?

Hi! I'm trying to instantiate a "card" GameObject, set a parameter with its name, then have the object return that name when clicked. It all seems to work until I click on the "card", which returns the initialized name of "Start", not "Created" as I am expecting.

main.cs (Attached to Camera)

 using UnityEngine;
 using System.Collections;
 using System.Collections.Generic;
 
 public class main : MonoBehaviour {
 
     public card_script temp;
 
     // Use this for initialization
     void Start () {
         temp = Create ();
         Debug.Log ("Step 4 - " + temp.GetType ()); // Type = Card
     }
 
     public static card_script Create() {
         GameObject tempCard = GameObject.Instantiate(Resources.Load ("Prefabs/card_prefab"), Vector3.zero, Quaternion.identity) as GameObject;
         Debug.Log("Step 1 - " + tempCard.GetType()); // Type = UnityEngine.GameObject
         card_script card = tempCard.GetComponent<card_script>();
         Debug.Log("Step 2 - " + card.GetType()); // Type = Card
 
         card.CardName = "Created";
         Debug.Log("Step 3 - My name is: " + card.CardName); // Name = Created
         return card;
     }
 }

card_script.cs (Attached to card_prefab)

 using UnityEngine;
 using System.Collections;
 
 public class card_script : MonoBehaviour {
     private string cardName;
 
     private Vector3 screenPoint;
     private Vector3 offset;
 
     void Start() {
         CardName = "Start";
     }
 
     void OnMouseDown() {
         screenPoint = Camera.main.WorldToScreenPoint(gameObject.transform.position);
         offset = gameObject.transform.position - Camera.main.ScreenToWorldPoint( new Vector3(Input.mousePosition.x, Input.mousePosition.y, screenPoint.z) );
 
         Debug.Log ("Name: " + CardName); // Expecting this to print "Created"
     }
 
     void OnMouseDrag() {
         Vector3 cursorPoint = new Vector3(Input.mousePosition.x, Input.mousePosition.y, screenPoint.z);
         Vector3 cursorPosition = Camera.main.ScreenToWorldPoint(cursorPoint) + offset;
         transform.position = cursorPosition;
     }
 
     public string CardName {
         get { return cardName; }
         set { cardName = value; }
     }
 }

Any insight as to what I'm doing wrong would be much appreciated.