1961 Decimal Definitives

A short-lived set, issued in February 1961 due to the change over to Decimal currency, this set was already obsolete by the end of May 1961.  This always strikes me that by using some of the designs of recent commemoratives, along with designs of the Wildlife definitives that this was only ever intended to be a stopgap issue. The R1 value is hard to find in fine used condition.