STS-84 was a manned spaceflight mission by Space Shuttle Atlantis to the Mir space station. STS-84 involved the transfer of 3,318 kilograms (7,310 lb) of water and logistics to and from the Mir. During the docked phase, 465 kilograms (1,030 lb) of water, 383.2 kilograms (845 lb) of U.S. science equipment, 1,168.6 kilograms (2,576 lb) of Russian logistics along with 178.1 kilograms (393 lb) of miscellaneous material were transferred to Mir. Returning to Earth aboard Atlantis were 407.1 kilograms (898 lb) of U.S. science material, 531.2 kilograms (1,171 lb) of Russian logistics, 14 kilograms (31 lb) of ESA material and 170.7 kilograms (376 lb) of miscellaneous material.
This patch I have identified as "Version 2" of the A-B Emblem STS-84 patch. It differs slightly in the booster stacks and flame embroidery with the "Version 1" A-B Emblem patch. This version of the patch has been flown in space (scans from flown version). Curiously, this flown version differs from the version actually affixed to the flight suits, which is the "V1" version.