1995 Scott Motion build up ... seatpost size?

[hoppy58]

I’ve just picked up a ‘95 Scott Motion frame and bits which will become a commuter bike for my Daughter. There is no seat post ...does anybody have this model? and can you tell me the seatpost size? It’s a bit mucky, but beneath the grime it’s a pretty sound tange cromo frame and forks with alivio/stx bits. I’ve already got spare wheels etc so hopefully it will be up and running soon.