Shimano 600 seatpost

[Bultaco370]

I am trying to find a non-aero Shimano 600 seatpost to use on one of my Alan bikes, so 25.0 mm size. I am not too fussy about which variant of Shimano 600 it is, although the earlier the better, but it has to be non-aero.

Anyone have one they want to part with?

Thanks