Recently I found a 10" Robt Sorby that matched my 9". Today I had 2 more show up. 11" and a 13". I noticed that there are 3 different kangaroo stamps used between the 4 saws.
Nice set of backsaws. You'll find there's differences in the kangaroos on the medallions too (and two different wordings as well). Plenty of scope for getting a bigger collection of Sorby saws