Original Health City set contained 4 metrocards. But after set was issued and sold one more card was made with exact design but not having number on the left sidebar. All cards of the set were sold separately and have the same circulation of 50,000. The last card which is not officially part of the set had circulation of 20,000. There is also very interesting thing happened to card #4: it has 2 versions with slightly different images (see below). Each card but #4 has 2 sidebars (#4 has only left sidebar). On the left sidebar there is title of the set “Health City” and card number of the set. On the right bar there are valuable facts related to health of people of New York.