It is well made, and has a hardened edge. Doesn't seem to have seen any use. The blade is 20" (50 cm) long, and .264" (6.76 mm) thick at the hilt. The tang does not go through the hilt, and there is a little brass decoration on the side of the hilt.
The brass flower(?) is unusual, indeed.
Any laminations and/or inserted edge? It looks well made: Even if it is a tad thin for a somewhat longer blade, it may well be earlier.
Also the scabbard looks better than most pieces that apparently got crafted for selling to GIs: While the carving is not comparable with 19th century pieces, the wood seems to be of higher quality - can you verify the hardwood/quality?