The discovery in 2016 of the Tomares Tetrarchic hoard was undoubtedly one of the most important cultural events to have taken place on the Iberian Peninsula in recent times. A team made up of members of several centers and departments of the University of Seville is currently working on the hoard in an interdisciplinary way involving a historical-numismatic study and a metallography analysis. Laying the foundations for the study of this hoard described in the title of a recent conference (Trieste, 2018) as “too big to study” has been an enormous challenge. The micro-excavation of nos. 10 and 11 has provided the material on which this initial work is based. With a significant number of coins studied (around 10% of the total), it is now possible to advance the preliminary results of the research of this colossal hoard.