Peter Brand speaks of this offering table in his _Monuments of Seti I_: "The layout of the decoration is identical to that of the Ny-Carlsberg table dedicated to Horus, the table top being decorated with two pairs each of conical and round bread loaves and a pair of jars. On the front side, two miniature offering scenes flank the concave depression. On the right, Seti kneels with his legs splayed out and his arms upraised in adoration of Seth, who sits enthroned on a plinth. The act of the king is labeled "adoring the god four times.' Seth's figure has been hacked out in antiquity, but its outline, as well as many internal details, can easily be made out. "On the left-hand panel, pharoah kneels in the same position before Nephthys, with his arms holding aloft a nmst-jar and a pot of incense. The scene is entitled 'giving libation.' Nephthys also sits enthroned on a plinth, wearing a tripartite wig, but no other distinguishing headgear. Both deities hold w3s-scepters and 'nh-signs..." In addition to Brand's book found at Google book search, there is also William Hayes' translation of the text accompanying these two offering scenes: "Nephthys' panel (left) reads: 'Long live the Horus, Appearing-in-Thebes-who-causes-the-Two-Lands-to-live, He of the Two Goddesses, Repeating-births, powerful of arm who repels the Nine Bows, Horus of Gold, Repeating-appearance-in-glory, rich in archers in all lands, the King of Upper and Lower Egypt, Men-ma'et-Re', the Son of Re', Seti Mery-en-Ptah, beloved of Nephthys, Mistress of the Gods, and given life.' "Set's panel (right) reads: 'Long live the Horus, Strong-bull-contented-with-Truth, He of the Two-Goddess, Great-of-splendor-in-the-hearts-of-mankind, Horus of Gold, Contented-with-strength-and-beloved-of-Re', the King of Upper and Lower Egypt, Men-ma'et-Re', the Son of Re', Seti Mery-en-Ptah, beloved of Set, the son of Nut, may he live forever!'". Hayes, William C. The Scepter of Egypt: The Hyksos Period and the New Kingdom. Harvard University Press, Cambridge 1959.(p.332), via correspondence with Mark Roblee Brand refers to Hayes, as well: "Although the table has no provenance, the epithet of Seth, 'the Ombite Lord of the Southland,' points to the site of Ombos. Hayes identifies this with Nubt, which he believed was located at modern Tukh on the west bank of the Nile, 32 km north of Luxor. Nubt, however, was probably located at the site of Nagada 26km north of Luxor." (See Wikipedia map) And there's the ancient temple of Seth in Nagada (aka Naqada). It is possible that this table was once at that ancient temple. Here is a close up detail of Seti I adoring Set, with my linear clarification: It is good Brand and Hayes give clear description and photos of the table, for the table has its back side to the front at the Met museum:

Photo credit Mark Roblee
(I have a photo I took, but it doesn't show the top side as well.)