I bought a chisel at an antique mall a couple weeks back for $5. I was looking for a 1/2" mortise chisel, and I wasn't sure if this was exactly what I was looking for, but it did look like a mortise chisel of some sort, and was marked 5/8. The alternative is a new Hirsch 1/2" for ~$50, so I am hoping this will work.
It has Samuel Newbould 5/8 stamped on the side, and is tapered from side to side (gets thinner toward the top), and appears also to be slightly tapered from front to back.
Anyway, I was just generally wondering about this chisel, since it appears to be old, but well made. I've never had an antique tool (besides my Grandfathers block plane), and it is pretty cool! It does appear to be a mortise chisel of some kind to me (comparing to my Hirsch 1/4 and 3/8), and I hope to get some use out of it!
Please excuse my ignorance, I have not figured out the vast array of chisel types yet.
Thanks!!!