Stack implementation using recursive links

RecursiveStack.cs

using System;
					
public class Program
{
	public static void Main()
	{
		var stack = new Stack();
		stack.Push(5);
		stack.Push(4);
		stack.Push(3);
		
		Console.WriteLine("Hello World");
		
		Console.WriteLine("count " + stack.Count);		
		Console.WriteLine("popped value " + stack.Pop());		
		Console.WriteLine("count " + stack.Count);
		Console.WriteLine("peeked value " + stack.Peek());
		Console.ReadLine();
	}
}

public class Stack
{
	private Stack _current;

	private Stack _previous;
	private int? _value;
	private int _count = 0;

	public int Count { get { return _current._count; } }

	public Stack()
	{
		_current = this;
	}

	protected Stack(int value, Stack previous)
	{
		_current = this;
		_value = value;
		_count = previous._count + 1;
		_previous = previous;

	}

	public void Push(int value)
	{
		_previous = _current;
		_current = new Stack(value, _current);
	}

	public int? Peek()
	{
		return _current._value;
	}
	
	public int? Pop()
	{
		if (this == _current)
		{
			return _current._value;
		}
		
		// swap
		var current = _current;
		_current = _previous;
		
		// clean
		current._previous = null;
		current._current = null;
		
		return current._value;		
	}	
}