see here. I'm wondering if these are regular stones, or have been modified in some way. Further research is definitely required. (7x5in print, by H Heiniger.)
CIP-133. A Hutchesons' Grammar School team won the Scottish Schools Championship which was held at Dundee in 1974. L-R: Charles Wighton, Bank of Scotland, Willie Jamieson, Keith Douglas, Sir Alastair Blair, Director of the Bank of Scotland, Ken Horton (skip) and Graham Govan. (10x8in print, by Ron Gazzard.)
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