Central Bank of Trinidad and Tobago, specimen proof 10 dollars, ND (1966), serial number B500001 to D100000 brown on multicolour underprint, arms at left, Queen Elizabeth II at centre, signature J. F. Pierce, reverse, old Central Bank building, sugar processing plant at top right, (Pick 28ap, TBB B203a) , pen annotation at top margin, 21. 2. 66, stamped 12345 at top margin, perforated CANCELLED, mounting traces at reverse, in PMG holder 63 choice uncirculated