Norm Dresner wrote:

| Does the chuck have a number stamped on it?
|
| Tom

There's an upper case "C" and "K" separated by a stylized drawing of an
elephant head, ears & trunk and underneath is the size "13 m/m"

Norm

On the strength of that information, I will up my bet to TWO American
nickels.

I seem to recall a similar brand mark that apeared on some India made
chucks. 13 mm is soooooo close to 1/2"

Cheers
Trevor Jones