These are like the United Kingdom set, called International Pantomime. The prefix Y is for Yugoslavia. They are also dated around 1960 and were used in areas with multiple languages since they had no words on them. Number 29 is printed different which may indicate a separate set.
Y-1 |
Y-5 |
Y-6 |
Y-12 |
Y-13 |
Y-15 |
Y-19 |
Y-20 |
Y-21 |
Y-22 |
Y-23 |
Y-26 |
Y-27 |
Y-29 |
Y-33 |
Y-35 |
Y-39 |