Thickest and Thinnest coins ever

I really have curiosity about this theme, the thinnest y seen is 0.7 mm

The 1797 2 Pence must be one of the thickest circulating coins

Many old silver coins are really thin, e.g. Ottoman, Egypt, German states coinage...
one of those: https://en.numista.com/catalogue/pieces47751.html

My Hamburg schilling (1750) is only 0.51mm thick. And it is in slightly better condition than the one shown on the picture:

en.numista.com/catalogue/pieces29001.html

This makes me think that there is an error in the catalogue.

I think Tunisian 8 kharoubs is one of thickest circulating coin


best
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How about this one for the thickest coin.  22mm thick

https://en.numista.com/catalogue/pieces41920.html

Cita: neilithicHow about this one for the thickest coin.  22mm thick

https://en.numista.com/catalogue/pieces41920.html

                 

0.3 mm https://en.numista.com/catalogue/pieces18832.html in my collection

20 mm https://en.numista.com/catalogue/pieces23518.html one Numista member has this coin
30 mm https://en.numista.com/catalogue/pieces23218.html two Numista members have this coin
120 mm https://en.numista.com/catalogue/pieces26282.html the whole mintage is in Numista members' ownership

I'll probably never be able to I'd, but it is just under 0.3 mm.
.

1771 Russia copper rouble (aka "Sestrtoretsk rouble") - 78mm diameter, 35mm thick

I'd imagine that the thinnest would be a hammered or early milled coin.
Here is the edge of my 1562 Elizabeth I milled 6 pence. I don't have a device that can accurately measure it but it's very thin.

I think these are my thinnest

I wanted to say Catherine II 5 kopek, but apparently the "cartwheel" twopence from 1797 is a bit thicker. (That's one of the coin types in my long-term wish list... they circulated so little that worn examples are very hard to find, and high-grade examples are orders of magnitude beyond my budget!)

However, the 5 kopek coins varied a lot in weight (the standard is 51 grams, sure, but apparently actual weights were all over the place from 30 to 80 grams). Since the diameter was fairly well standartized, the difference must have been mostly in thickness, which means that the heavier examples should be thicker than the 1797 twopence (not mine - my two examples appear to be 4.3-4.8 mm; hard to say more precisely because the high-relief design gets in the way).

As for thinnest, you should look for medieval bracteates - coins so thin that they could only have a design on one side, and the other side was its mirror image. Supposedly some Norwegian examples only weighed 0.1 grams - they must have been extremely thin!
I don't have any of those, unfortunately. I do have a uniface Salzburg pfennig from 1521 that shows part of the mirrored design on the blank side; I measured it with my caliper, and got 0.45 mm. Which is thicker than I expected, actually.

(Incidentally, anyone knows what's the thickness of early Roman Republican copper as and semis coins? Something like this one? They should be well in the running for thickest, being silly heavy.)

What about the napoleonic zara silver coins? could they be in the running for biggest silver?

I'm going with the stone money of Yap as the thickest: https://en.wikipedia.org/wiki/Rai_stones

Mughal emperor Akbar's Copper tanka (2 dam) is worth mentioning here. Weight 40.73g, Width 23.17mm (Not sure of actual thickness).