PUBLISHED: October 6, 2015 16:11 Stanley Gibbons value plunges after profits warningRare stamps dealer Stanley Gibbons lost more than a quarter of its stock market value after warning over profits… http://www.shropshirestar.com/shropshire-business/city-news/2015/10/06/stanley-gibbons-value-plunges-after-profits-warning/