Alan V Weinberg writes:

Physical Description
Presentation box of ebony and gold with commemorative medal of well over a pound of gold. On the obverse is a bust of Ulysses S. Grant to left with legend, "MAJOR GENERAL ULYSSES S. GRANT / JOINT RESOLUTION OF CONGRESS / DECEMBER 17. 1863" Thirteen stars and an ornate wreath surround the design.

Specific History
This Presentation medal was given to General Ulysses S. Grant in commemoration of his victories during the Vicksburg Campaign. It was presented by the Congress of the United States.

To read the complete article, see:
Grant's Vicksburg Victory Medal(https://amhistory.si.edu/militaryhistory/collection/object.asp?ID=284)

Rare Mint State Large-Size 1863 Ulysses S. Grant
Vicksburg U.S. Mint Medal, Julian-MI-29

Rare Civil War 1863 Ulysses S. Grant Mint Medal, Julian-MI-29, Large Size. Bronzed copper, 105 mm, 10 mm thick, 502 gm. An impressive example of this rare Civil War-era medal, dated December 17, 1863. Obv. bust left, MAJOR GENERAL ULYSSES S. GRANT / JOINT RESOLUTION OF CONGRESS / (date), ornate double-ringed border. ATROBUS D. and PAQUET F. below truncation. Rev. Commerce looking down at views of Vicksburg and Chattanooga, separated by the trophies of war. She bears a shield labeled DONELSON. Designed by Anthony C. Paquet, this piece is technically a medallion (defined as more than three inches in diameter) since it is more than four inches thick. A beautiful example, essentially as made, but with a couple of nicks on the high points of the shoulder of Grant's bust and the forehead. Milk-chocolate, lustrous surfaces with no singular impairments otherwise.

To read the complete lot description, see:
Rare Civil War 1863 Ulysses S. Grant Mint Medal, Julian-MI-29, Large Size....(https://coins.ha.com/itm/u.s.-mint-medals/rare-civil-war-1863-ulysses-s-grant-mint-medal-julian-mi-29-large-size/a/1100-28165.s)

Alan adds:

To read the earlier E-Sylum article, see:
U.S. GRANT MEDAL STRUCK ON 1000 TONS PRESS(https://www.coinbooks.org/v23/esylum_v23n52a09.html)