India Post has issued different stamps on same or similar subject on different Occasions and Events. The collectors with creativity have made covers with combination of  stamps of such similar Occasions and Events duly cancelled on respective dates. Such covers show the creative efforts of the philatelists.

Here on this official cover, stamp of XIX Olympics dated 12-10-68 and  stamp of XX Olympic Games issued on 10-8-72 are combined on one cover of 12-10-68 with cancellations of respective dates.