Parthian/Sassanid heavy cavalry use bamboo lances?

[daryush]

Dan, that particular depiction is likely a fake - it doesn't follow the normal Sasanian touretics *at all* and the material culture depicted is strange also.

However, couched lances are shown at Khalchayan so it's highly likely that a couched technique was used by some. The Khalchayan lance is not the huge kontos but a much smaller weapon, and dates a few centuries before the Sasanian era.