Hello all!

I have a question about what appears to be at least two variants of the Black Watch tartan.

My understanding is that the standard Clan Campbell tartan and the Black Watch (or "Government Sett" or "42nd Regt.") are one in the same. It's ITI number is 1. There is also a Black Watch tartan that is ITI number 207. It's alternative name is "42nd Regt. Government Tartan No. 2". When I compare these two tartans using the Tartan Ferret, my (admittedly untrained) eye tells me that they're very similar but not exactly the same. When I start looking at the details of the sett, however, and comparing the placement of the colors and the location and size of the various stripes, suddenly I can't figure out HOW they're different.

Can anyone tell me how these two variants differ, or if they actually DO differ? I ask because I'm thinking of getting a Clan Campbell tartan and I wasn't sure if I needed to be careful between these two apparent Black Watch versions.

Thanks!
~Ken