And it seems that the Singapore $50 banknote has two square dots on its reverse too, just like the $2, $10, and $100 banknotes. Now, these four denominations come in three different varieties, viz. no dot, one square dot and two square dots. In March, two triangles were spotted on the $1000 banknotes, making the whole pattern even more unpredictable. For any denomination, these symbols are always found beneath the word describing its featured theme.

Scan by Vincent Tan.