It's quite large, actually!!!
http://www.newadvent.org/cathen/06165a.htmFractio Panis
The name given to a fresco in the so-called "Capella Greca" in the catacomb of St. Priscilla situated on the Via Salaria Nova. The fresco, which with the whole of the decorations of the chapel dates from the first half of the second century, is of the highest liturgical and theological importance. The painting is found upon the face of the arch immediately over the altar tomb, upon which beyond all reasonable doubt the Holy Sacrifice was offered. By a providential accident this particular fresco, having been covered by a thick crust of stalactites, escaped the notice of the early explorers of the catacombs, who, by their eagerness and ignorance combined, often did much irreparable harm. In the year 1893, Mgr. Joseph Wilpert, the most distinguished of a band of young scholars who looked upon the great archaeologist De Rossi (q.v.) as their master, arrived at the conclusion that the roof and arches of this chapel were decorated with frescoes. Chemical reagents were used to remove the crust which covered the surface, and by the patient care of Mgr. Wilpert this delicate operation was attended with complete success. The most important fresco thus recovered was that already referred to over the altar tomb. The scene represented is a picture of seven persons at table, six men and a woman. It seems clear that six of these are reclining as the ancients reclined at their meals. But the seventh personage, a bearded and impressive figure, sits somewhat apart at the extremity of the table in an attitude which is highly significant. His head is thrown back, he has a small loaf or cake in his hands, and his arms stretched out in front of him show that he is breaking it. Upon the table immediately before him is a two-handled cup. Further along the table there are two large plates, one containing two fishes, the other five loaves. At each extremity of the picture upon either side we notice baskets filled with loaves--four baskets at one end, three at the other. ....