Didn’t know how to categorize this

Once again saw something interesting that I’d never seen before so without any research at all, I bought it. So should this be a world coin or exonumia?

 

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I'd go with World trial piece....interesting item and shows that it's not just the US Mint that has these "after midnight" creations

 

Interesting. I can see why you picked it up. Thanks for posting it.

 

Fun I would call it exunomia.
Although trial, test or pattern shouldn't be looked past.

 

900 million trial pieces? Wow, must be some trial.

 

Funny -- missed the separate sentence? Although the US mint has struck a couple million test pieces or ahead of authorization and had to melt them.

 

I was taught that M is for thousands and MM to represent millions. Now I'm curious about this one Baht trial piece. That's quite a difference in mintage numbers.

 

I know M represents 1000 in Roman numerals, but I would expect to see it used for million when talking about coin populations. Of course they could have replaced 900M with CM, which would mean only 900.

 

I read it as 900 million over a 20 year period 1962-1982.
The trial strike are separate

 

That’s my interpretation as well. Flip was written by the dealer and $125 was his starting price.

 

The "coiner" simply did not study Roman numerals. Thailand never used those thingys.