I have a set of pre 1910 MacRae pipes, and they are very good pipes indeed. The MacRae in question was Duncan, it's right he was a wood turner, not a piper, he also made bowls, (the lawn bowling kind, not the kind you eat your porridge out of). Compared to other vintage pipes, there's not a great deal of MacRae sets around. I've only ever seen two other sets, Angus MacDonald of the Scots Guards had a set he competed with in the 80's.
The most sought after names in old pipes are Henderson, Lawrie and MacDougall, but those of us in the know also rate MacRaes very highly. Angus would play his MacRaes and win gold medals with them. When other pipers asked what make his pipes were, he'd always say Hendersons, because he didn't want up and coming pipers to buy MacRaes and get his sound. He also sold old sets of Hendersons to other pipers, making a fair profit, and they could never understand why they couldn't get the same sound as Angus. But, that's pipers for you.
Your Great Uncle made excellent pipes.
Dougie Forsyth in New Zealand has two sets, a 1910 cocus wood set, pics here: http://groups.msn.com/bagpipeman/1912mcraecocus.msnw
And, maybe of interest, a set specially commisioned for the Clan MacRae in 1912 http://groups.msn.com/bagpipeman/1912mcraespecialedition.msnw
George Grainger took over Duncan MacRae's shop around 1946. Campbell came in later to the business. (Grainger's son is a piper and is in the Strathclyde police force, unless he may be retired by now). Donald MacLeod then managed the Grainger and Campbell shop, but he retired and sold the business at the end of the 1970s, and the quality of pipes and hence the company went into decline. If you visited the Grainger and Campbell company post at the end of the '70's, the new owners likely wouldn't have known much about the company history. Before that, wee Donald would have kept you there for hours.
Reply posted by : Adam Sanderson