The traditional kite set issued on October 10, 2005 containing three denominations i.e. 30s, 50s and RM1. All the denominations have two types of perforation i.e. P12 and P13.5. I am not sure which ones are less common. However, I pretty sure that it took me quite some time to obtain all the perf varieties from various post offices.
Anyway, I had a quick check on the eBay listing for this stamp set on May 26, 2009. I found three listings on this stamp set:
1. 30s P13.5, 50s P12 & RM1 P13.5
2. 30s P13.5, 50s P13.5 & RM1 P12
3. 30s P13.5, 50s P12 & RM1 P12
So, the 30s P12 seems to be less common then........
perforation: P12
perforation: P13.5