Because of late decision to bring out stamp on this day, the printer had no time to design a new stamp, therefore two previously issued values were overprinted \"TENTH ANNIVERSARY/UNITED NATIONS/24.10.55\".
The overprint was in blue colour 19.5mmx18.5mm on 1 1/2a anna (Tomb of Jahangir) and 19.5mmx14.5mm on 12 anna (Sui Gas Plant). The overprinting was applied by letter press by PSPC.
These commemoratives were sold over the counters till November 7,1955 (14 days only) but remained valid for postage for another six months. The quantity produced was 110,000 copies of each value. Forgeries of the set are also known, but differ in font shape and size.