I been given a good problem 1952 product, was a small degree of old pitting underneath the newer blue end. Provider was great,as generally.^ Monetchikov, S. (December 2007). "???????: ??: ????????? ??????? ????" [TT: Little Russian wonder]. "Bratishka" magazine. Archived from the first on 15 January 2015. ^ a b c d e file g h i j k l m n o p q r s