I couldn't seem to find this on marcophilile.org
Perhaps I'm wrong on the (C T 1o/ouest (1 could be a 4) Not 100% sure
Or maybe I missed it (there where none I remember similar) G I or CDS
It's on a Scott's #33 1863-70 (soon I'll have a y&t and we'll speak the same language:)
Does anyone recognize or know what this cancellation was used for?