I saw that, however it was the A&SH that I was thinking of. Found a colour picture of an Argyll in a kilmarnock lurking on my hard drive. How to insert an image here?

I don't know about the other regiments and broad kilmarnocks; I believe the drum major of the KOSB's pipes and drums wore an Atholl Bonnet. Currently, drumers in the RSDG in No. 1 and 2 orders of dress wear them with their distinctive yellow 'van dyk' band. The firm whose link I supplied earlier in this thread DOES make Atholls!

http://www.army.mod.uk/img/dno1dres_large.jpg

The bonnet doesn't show well in the picture, but think of a balmoral with an extra long front that flops forward, worn without being pulled to either the right or the left side of the head.

Mark - Ohio