This is cover of "Set of Ten Gold Coins Colour Picture Post Cards".
These are 2 different Samudragupta Gold Coin post cards in the set.
This is Sasanka Gold Coin Post Card in the set.
This is Golden Ramatanka post card.
This is Bactrian Greek King Diodotus II Gold Coin Post Card.
This is Jahangir Gold coin post card.
This is Akbar Gold coin post card.
This is Victoria Queen Gold Coin Post Card.
This is the back of the cover of this Gold Coins Post Cards set.