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 Hockey Champions dated 31-12-66 and stamp of XX Olympic Games, Munich with Stamp showing Hockey issued on 10-8-72 are combined on one cover of 31-12-66 with cancellations of respective dates.