1959M PR65RD Half Penny is Extremely Rare. Only 25PRRD (7/26). 1506 proofs minted - This PR65RD is equal 3rd in PCGS Pop report with 3 higher - 2PR66RD & 1PR67RD. Notably no Perth Half Penny Proofs were minted in 1959. 

Of the 1506 PROOFS minted - 10% (155) are PCGS slabbed - this demonstrates scarcity - 55PRBN:75PRRB:25 PRRD. Seriously underrated by collectors of proof half pennies.