19. Book, World Hallmarks With The Authors February 24, 2010May 19, 2013martin Martin & Phyllis visit with William Whetstone, Danusia Niklewicz and Lindy Matula on their book: World Hallmarks – Vol.I – Europe 19th – 21st Centuries http://media.blubrry.com/podcast_ufo/antiqueauctionforum.com/wp-content/uploads/2010/11/19.-World-Hallmarks.mp3