Actually I believe the Eurocard and Mastercard are one and have been for aLONG time...I googled it and what I found on wiki:
In 1968, Eurocard International and
MasterCard International entered into a
strategic alliance, in which both issuer's cards would be accepted on either network. This allowed MasterCard to get an instant European acceptance network, and Eurocard to get accepted worldwide. Eurocard International got the sole license to issue MasterCard cards in Europe.
Today, the Eurocard name exists in combination with the MasterCard
acceptance mark as a product name. This means that the Eurocard name is still used on a card, although only the MasterCard logo is displayed at locations which accept MasterCard cards. The Eurocard logo is not used any more, as the
acceptance mark is discontinued and merged into MasterCard. However, the use of Eurocard as a brand for MasterCard credit cards is limited to Scandinavian countries and the Baltic countries. In other former Eurocard markets, such as the German speaking countries for instance, this brand was fully replaced by the MasterCard brand.
I cut/pasted only portions of the wiki. If you want to read it all please go here
http://en.wikipedia.org/wiki/Eurocard_(payment_card)