Wooden nickels are very collectible, and are seeing somewhat of a surge in popularity once again here in the 21st century. They have a very interesting history in the United States -- of which I will not duplicate here, since any web search will bring up far more information that anyone could ever hope for.
Dr. Chafin had a very successful life serving the Lord in many leadership and administrative capacities, including pastor of South Main Baptist Church in Houston, and serving as dean of the Billy Graham School of Evangelism. He wrote several books and recorded LP records.