Answer: "Looks like a piece from a bedhead. I think the sheath of wheat is a xtian symbol about reaping what you sow and of death and renewal. Something along those lines. Wheat has been used on double (marital) beds for centuries, including the bedhead and upright posts. They're also used on chairs in a literal or a stylised way and represent prosperity in relation to the 'reap what you sow' type of symbolism."