I just received a beautiful Ibbotsons & Roebuck 12 backsaw. I can't seem to find much on them in the forum here, so I thought it could be of interest. From BBSM and some googling it looks like the partnership between William and George Ibbotson with Jonathan Roebuck lasted only a few years, c1821-1827, putting a pretty narrow window on the age of this saw. It appears the 1 inch medallion is perhaps a pretty early example of their use on backsaws, resembling more of a coin than a traditional medallion. My reading suggests that Ibbotsons & Roebuck started aggressively shipping to North America and have to wonder if early medallions were more often found on exported saws than those remaining in the UK... Nothing concrete back up that assertion, but I feel it's been mentioned somewhere before, maybe in BSSM? Looking at the handle it seems to me a previous owner has shaved off some of the cheek. I'm guessing as he sharpened more, the cheek was getting in the way of his cuts, so he trimmed both sides to continue to use the saw. Quite beautiful and has remained in wonderful condition.