Jees the bit is really deep. Is this a difference in style or does it indicate that the ones we usually see have just been used a lot more?
I would have left the patina in place. I buy old tools because I want my work to appear as if it has not been touched by a machine tool. The experience is spoilt for me if the tools I'm using have obviously been touched by a machine.
How much will you be letting it go for?