A selection of my coins:

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This special coin was minted and handmade in India 500 years ago. It is made of copper and weighs 20g. The denomination is 1 paisa. 

This old Greek coin has a weight of 1g and is made of copper. It has a denomination of 1 Lepton and the King at the time was King George the 1st.

This old 1 real coin from 1742 has a weight of 6.8 grams and made of silver. The king at the time was King george the 2nd.

This is my ancient coin from 134 BC! It is made of silver and is from the Roman Republic - before the empire and 2000 years old! It weighs 3.9 grams and the value is 1 Denarius, it has a diameter of 20mm.

This old braided hair cent from 1844 has a weight of 10.89g and is made of copper. The period at the time was the Federal Republic.

This old German coin from 1924 has a weight of 3.66g and is made of iron. The denomination is  24 Pfennig.  

This old Bulgarian coin from 1910 has a weight of 2.5g and is made of silver. The king at the time was King Ferdinand.

The ruler at the time was Fiippo IV.

This coin's denomination is 20 Para, and it is from the Hijaz Railway while the Ottoman Empire was ruling.