Do you know, where in the country has the coin in your wallet been minted? I really do not know about other countries, but in Indian coins, there is one such feature. There is a mark, under the date of issue. There are four types of marks and the mints which produce coins are- The mint in Noida (In NCR or national capital region),
in Hyderabad, in Mumbai and in Kolkata.

The specified marks-                  Mumbai- A Diamond
                                                  Noida-    A Circle
                                                  Hyderabad- A star
                                                  Kolkata-  Nothing!

So take that coin and check it out!

I changed my background image many times, and I finally decided on this ''Chinese'' calligraphy one. Why?
I put it because the banknote was first developed in China during the Tang and Song dynasties, starting as early as the 7th century. Its roots were in merchant receipts of deposit during the Tang dynasty, as merchants and traders desired to avoid the heavy bulk of copper coinage during large commercial transactions. Here are some pictures of the notes-


                   

The Song Dynasty Jiaozi, the world's         The Huizi Dynasty banknote, issued in 1160. 

earliest banknote.

A Yuan dynasty note.