Duncan Miller Canterbury Tumblers - Rare & Undocumented.  TUMBLER ON THE LEFT IS THE 7 oz OLD FASHIONED WITH NO APPARENT FLAWS AND MEASURES 3-3/8" DIA. x 3-1/4" HIGH.  IT IS ONLY MENTIONED IN ONE BOOK.   THE TUMBLER ON THE RIGHT WILL HOLD 5 oz.  IT ALSO HAS NO APPARENT FLAWS AND MEASURES 2-13/16" DIA. x 2-15/16" HIGH.  THIS IS DEFINITELY DUNCAN CANTERBURY BUT WE CAN'T FIND IT DOCUMENTED ANYWHERE.  SURELY IT CAN'T BE ONE OF A KIND!!!   inv. #6860-63; #6864-65