2016 Everybody must be in own scavenger Gandhi Special Cover #Spl-40

15th - 23rd, INDIPEX 1973 - Complete Set of 9 Special Cover #DL165

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1960 Indo-American Society First Annual Stamp Exhibition Academy of Fine Arts Calcutta, Temporary P.O. C-890 Special Cover #WB20

1961 SIPA Indo American Stamp Exhibition - Freedom Fighters Gandhi Special Cover #Spl-16

1961 World Meteorological day Special Cover #TNC342