Question of Spear origins

[katana]

G'day Gav,
This maybe Rajput ....the Sang often have the 'ringed collar' and usually a pronounced central rib. Although most Sang are 'all steel', some variants have a wooden shaft. Rajputs also used camels .....and many lances attributed to the 'camel cavalry' are 8 foot or so long.....a similar length to yours.

I am wondering whether the blade on yours was more leaf shaped and has had a later modification either through damage to one or both edges or as an improvement (perhaps to improve penetration) as yours still exibits a strong mid rib

Below is an image from Artzi's site, although this is a curved bladed version the ring collar is self evident.

Best
David