Last week we had largest coins. Let see the smallest coins Coin Talkers have. I'll start with two. 1) Netherlands 1874 scabbard 10c 15mm x 1.4 grams 2) American Legion Token from 40's 6.3 mm x 2.5 x 1.1 grams
1/3 Pavali minted by Sriman Rajadhiraja Raja Parameshvara Praudha-pratapa Apratima-vira Narapati Birud-antembara-ganda Maharaja Sri Krishnaraja Wadiyar III Bahadur. 8mm and 0.92g
The smallest coin that I have ever owned is this James I Half penny from 1604-19. I have no idea how people could have possibly kept track of them back then. They are around 10.3mm (depending on the planchet) and weigh about 0.24g. A sneeze would easily blow one right off the table. From a distance in dirt or in carpeting it looks just like an ordinary piece of detritus. It seems too small to have been of any use, but apparently they made the economic rounds.
Ionia AR Tetartemorion 4mm 0.13g 530-500 BCE Rosette - Incuse sq punch 5 pellets SNG von Aulock 1807 Iona Kolophon AR Tetartemorion 530-520 BCE Archaic Apollo Incuse Punch 0.15g 4.5mm- SNG Kayhan 343 Left old
Here is my smallest. I don't know exactly what it is or where it is from... There is a face on the obverse and what looks to be a deer/stag on the reverse. Weighs ~0.55g and is ~7/8mm diameter.
I'll go with a "Panama pill". I've lost my photos of the ones that I had but they are 1904 2 1/2 centisimos silver: Diameter: 10 mm Weight: 1.25 g