Mishnayos Shekalim Perek 6 Mishnah 4

This mishna details the exact location and purpose of the thirteen tables in the Temple. There were thirteen tables in the Temple. Eight of them were made of marble and were located in the slaughtering area, north of the altar, where the priests would slaughter the offerings of the most sacred order. Upon these tables they would wash the innards of the offerings, as the marble was cool and preserved the freshness of the meat. And there were two more tables on the western side of the ramp, south of the altar, one of marble and one of silver.On the table of marble they would place the limbs before they were sacrificed, and from there the priests would bring them up to the altar. On the table made of silver they would place the ninety-three sacred vessels brought out from the Chamber of Vessels each morning for the services of that day. And there were two tables in the Entrance Hall to the Sanctuary, on the inside of the Entrance Hall, near the opening to the Temple, one of marble and one of gold. On the table of marble they would put the shewbread before its entrance to the Sanctuary after it was baked on the eve of Shabbat. And they would place the old shewbread on the table of gold upon its exit from the Sanctuary, to be divided among the priests. The reason the shewbread was placed on a marble table before being brought into the Sanctuary and on a golden one upon when removed from there is that one elevates to a higher level in matters of sanctity and one does not downgrade. Since it had been placed on the golden Shewbread table all week inside the Sanctuary, upon its removal it could not be derogated to a marble table and so was placed on a different golden table in the Entrance Hall. Finally, there was one table of gold inside the Sanctuary, i.e. the Shewbread table, upon which the shewbread was placed always.