I think this is a palaquin yari, carried by higher ranking samurai and samurai women riding in palaquin, hence the short handle. In terrible shape, but as mentioned above, a good polisher could restore it to fine shape.
Rich S
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Richard Stein, PhD
Old Puukkophile
NKCA Life Member
Japanese Sword Guide
http://home.earthlink.net/~steinrl/nihonto.htm
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