OK...I dug up two of my Mackay boxes...
These are the bar codes on the labels
Edwardian: 0 92739 65927 7
Coffee Suede: 0 92739 65903 1
I can't find the dark oak box. But perhaps they can do a partial number search of the first 9 difgits which look to be identical.
I'll keep looking for the dark oak box.