what are these cranks worth

I have 3- 340 cranks I am getting ready to sell. I would like to know what is a reasonable price for them. Its been awhile since I have bought or sold 340 parts and I would like to move them but at a fair price. one of them is a cast crank # 2658393. 2 of them are steel forged # 2532457. all 3 cranks mic out as std/std according to my mic. I would appreciate your ideas on these. Bill