A nice stockroom find - a classic rear wheel, Shimano 105 hub, (FH-M5550), butted spokes (minor surface corrosion - will clean up easily), 32H Mavic GP4 Sprint (tubular).
Cassette carrier, rim & tyre look unused so I assume it's unused, spins smooth, straight & true, 130mm OLD so 8,9,10 speed, deserves a good home to go to, (I'd suggest replacing the tyre).