One of a kind

[Prosit]

It might also be the only coin with a black/white board with math written on it.
Dale

[<k>]

This may also be the only coin with an exploded pie graph as well as the only coin with an organisation chart on it. That would make it the only coin with three one-of-a-kind features, so that it would actually have four one-of-a-kind features, which would also be a one-of-a-kind feature and therefore it would be the only coin with three real and one virtual one-of-a-kind features, which would give it five one-of-a-kind features

Peter

Have you ever heard of the English phrase, "You are too clever by half" ? 

[andyg]

Are they solar panels beneath the wind turbines?

[<k>]

Are they solar panels beneath the wind turbines?

It's a possibility - even likely, since the other faddish energy equipment is depicted. But there are no solar power factories that make them, and mining the materials and producing the panels is by all accounts a very dirty business. Nor would they ever have the power to keep the industrialised world in the style it has grown accustomed to.

[<k>]

Malta, 1 lira, 1986.

Is this the only coin that shows a worm? Botswana issued a coin featuring a "mophane worm", but that creature is in fact a caterpillar.

[Prosit]

Not counting the city of Worms  there are some tokens...don't know of any coins...
Well, there is the Chalmers Shilling but I don't even know if that is an official coin or not.

Anyway if not unique it is pretty darn close.

Dale

Malta, 1 lira, 1986.

Is this the only coin that shows a worm? Botswana issued a coin featuring a but that creature is in fact a caterpillar.

[<k>]

Well, there is the Chalmers Shilling but I don't even know if that is an official coin or not.

Had to Google it. Disgraceful that the Merkins would desecrate the noble shilling with a worm. 

[Prosit]

Certainly true that at that time there were a  considerable number of Merkins not feeling too respectful toward...well, pretty much anyone.

The Shilling...a lot of discussion could take place and has taken place as to its exact status.

It is a neat coin thingy although far above my budget.

Dale

Had to Google it. Disgraceful that the Merkins would desecrate the noble shilling with a worm. 

[<k>]

Zambia, 1000 kwacha, 2003.  Prince William's 21st birthday. He is shown riding a jet ski.

Are there any more jet skis on coins?

[<k>]

Seychelles, 25 rupees,  1983.

I've seen this described as a fish trap and a lobster pot. I'm not sure which it is, nor where it would fit in the standard thematics categories. I do think it is the only such implement that I have seen on a coin design.

[mrbadexample]

Is this the only pickaxe? 

[malj1]

1 gram gold coin issued by Julius Popper forTIERRA DEL FUEGO, name of the issuer - POPPER and year 1889 (Roumania) see more here

and

Bangladesh 5 Poisha 1975 K6 Shapla Flower & Pickaxe FAO Issue Square Shape

I didn't look further   

[mrbadexample]

Off to the rejections bin I go then.

[Pabitra]

Bangladesh coin shows plough and not pick axe.
A plough has more connection with FAO than a pick axe, I think.

[<k>]