This lightweight brass copy of the general issue 20 Cash (Y5) was issued in the 1920's. It's a real laugher! The "C" in "Cash" is upside down & backwards, the "A" has no bar and the "S" leans about 35-40 degrees to the right.
I'm not too sure if this would be classified under warlord issue. I could be wrong. To my understand, warlord issues were often cast but not struck. Coins were often of late 1910s to 1920 design but I don't think I have come across any earlier. This is an example I'm more under the impression that the brass looking coins are contemporary counterfeits. Good quality copper coins were melted down and watered down to make absurd fakes like this
You're probably right about it being a contemporary counterfeit. I didn't think of that. A collection of contemporary counterfeits would be really nice to build. Some of them are really interesting like the crude underweight forgeries of British halfpence in the 1750's. You get really goofy looking portraits of king George, blundered legends and sometimes double strikes.
With anything collectable, I guess my best advice is to watch the rise of counterfeits. A couple of ebay sellers that are based in Netherlands and Spain that supposedly have good feedbacks are home to some of the super counterfeits. Sadly they are unstoppable. The example shown is an absurd mule of Chekiang Province / Fookien Province. This is another absurd mule of Kiangnan / Hupeh Province And this is another contemporary counterfeit
So, people are now making counterfeits of counterfeits? Counterfeitception? My brain hurts, I need to go lie down...