(v) (n) Double Letter Cut-down "TA" to "TR"

Double letter cut-down "TA" N.S.W - AUST " at base

Double letter cut-down "TH" N.S.W - AUST " at base

Double letter cut-down "TM" N.S.W. at base

  Double letter cut-down "TO" N.S.W. at base - Type 1 

Double letter cut-down "TO" N.S.W. at base - Type 2

Double letter cut-down "T R" A.C.T. at base which I believe to have been cut from the WEST RIDGE A.C.T date-stamp (see below)