I used to think the Cheney hammer was a simple subject. Not so, apparently.
Looking at the list of claw hammers at:
http://toolexchange.com.au/I find #2871 made by Cyclone
#2850 made by Flag Brand
#4755 made by Gedore
#2824 is listed as made by Cheney, Australia
#6449 is listed as "Original Cheney"
#1795 listed as Cheney USA
Numbers 4308, 4896, and 2872 are listed as simply Cheney.
Maybe some of our Aussie members can shed some light here -- there's a lot of territory to cover, it seems.
A number of tools have been made in Australia on patterns from elsewhere. (There's a Ford factory in Gelong, Victoria that makes cars that don't look like any Fords I know, just to confuse the issue.) When I was in Oz back in 2006, I picked up a Stanley pattern marking gauge made by Simplex -- parts interchange with American Stanleys.
Cyclone is an Aussie manufacturer, but what about Cheney, Aus? And where were Gedores and Flag Brands made?
I'm fairly certain that my straight face was made in the US. I picked it up years ago at a flea market in Sacramento.
All those I enumerated above have that cross shaped slot, and it seems to me that this style slot is only useful to accommodate rose head cut nails.
Were such nails still much used in Australia in the 20th Century? I haven't found any of this style of slot among the bell faced Cheneys.