Tom,
I had a good sample of SCC No.2 Brown a few years ago, it was hidden from sunlight and weather inside a 1942 vehicle, I took it to RR Services (www,warpaint.co.uk) and they sent it to the paint manufacturer to be matched. If you contact Kerry at Warpaint it is known now as 'Farrant Brown'. A very good match, you have to tell them whether you want Matt or Semi-Matt. The latter is more durable.
regards, Richard