I haven't done any turning since high school, but the bug is biting me again. To add to the itch, I recently was given a set of twelve decent-looking tools; the donor has had them about twenty years but never used them. The handles are a bit short for heavy facework, but OK otherwise--stained hardwood of some sort and nicely shaped, with brass ferrules. The tool steel appears to be HSS (orange sparks from the grinder); it's of a rather silvery gray color and the sole marking on all the tools is "-AD-" stamped into the steel.
Anybody recognize the stamp? Worth the effort to regrind to usable shapes, or pitch 'em and get my checkbook out?
John Wadsworth, in Delhi, NY