Uthed,
I have seen the #835 and it is similar to my #361 except for the handles I think. The #361 has no handles. 2.5" x24". The #827 is odd though. 2.5" x 24" with handles but a different finish on ther front side of the leather and ridges cut into the back of the leather. It is one of the higher end Illinois strops so the rough finish does not seem to be a cost cutting factor so maybe it is just designed for a middle step in stropping process.
Tony