Central Bank of Trinidad and Tobago, $10, 1964 (ND), serial no A 000000, specimen colour trial no 61 in olive-green, Pierce signature, Annigoni portrait of Queen Elizabeth II at centre, reverse bank building and factory and $20, 1964 (ND), serial no A 000000, specimen colour trial no 79 in red, Pierce signature, Annigoni portrait of Queen Elizabeth II at centre, reverse bank building and cocoa pods (Pick 28act and Pick 29act), about uncirculated to uncirculated and the scarcer Pierce signatures (2)