Hey AQ,
Yup- it has indeed been fashioned by ancient hand. It has nine cup marks on its upper horizontal surface. It's about 1 metre high and about 1m by 0.5m wide. I've not seen many upright stones with cup marks on their upper surface, although the nearby Carse Farm I four poster has two such stones.
I've had a look through some of my books on the Perthshire area, but could find no other references to this stone, nor could find anything on the web. A curious one...
Martin
PS- I'm assuming the original report in the Proc Soc Antiq Scot by FR Coles in 1910 is correct and that 8' should indeed be eight foot and not 8" !!!