Its stated that......
The Benchmark Collection stands as the most significant set of Australian pre-decimal coinage ever assembled. Mark Duff of Strand Coins in Sydney, Australia, carefully compiled the collection over a period of 25 years, drawing coins from many of the most important collections of Australian coins.
There was another collection by Baldwin (UK) but that contained UK coins from a haord in Brussels and was not to my knowledge called a benchmark collection.
The Benchmark Collection stands as the most significant set of Australian pre-decimal coinage ever assembled. Mark Duff of Strand Coins in Sydney, Australia, carefully compiled the collection over a period of 25 years, drawing coins from many of the most important collections of Australian coins.
There was another collection by Baldwin (UK) but that contained UK coins from a haord in Brussels and was not to my knowledge called a benchmark collection.



















