The 1964 Topps design is one of my favorites and it has been used many times since by Topps in different formats. Most recently 1964. 1964 was also the Mick's last really good year.
In Baseball Card Magazine August 1985 the card value was listed ($9-20)
In Beckett Baseball February of 2005 the card value was listed ($200-350)
In Beckett Baseball April of 2011 the card value was listed ($250-350)
Last Month on ebay - 95 sales for the average price of $95.43.