Massive bronze spearhead or dagger

Iron Age I, II Millennium B.C., Northwest Iran

Cast. Tang spearhead with round shoulders, ovate blade with rectangular in cross-section midrib, extending into a shank with pointed rectangular in cross-section tang. 
Length 20 3/4″(52.7 cm), Width 1 3/4″(4.4 cm).

For published examples of similar spearheads see:
– Negahban E. O., Weapons from Marlik, in: Archaologische Mitteilungen aus Iran 16, 1995, Taf. VI, 78-80
– E.Haerinck, The Iron age in Guilan-Proposal for a chronology, plate 60 # 8; in “Bronze-working centres of Western Asia C.1000-539 B.C.”, John Curtis (Ed.), 1988, Kegan Paul International, London (in association with the British Museum)
– Stutzinger D., Mit Hieb und Stich Bronzewaffen aus dem alten Iran Die Sammlung von Gravert (Frakfurt am Main, 2008), p.38, cat.21