The All White Metal type is easily identified by having no brass
metal parts. (This key is missing the nut that holds the anvil
and anvil strap to the frame.) |
(click to enlarge) |
(click to enlarge) |
In this photo you can see that the eye screw on this key is
unusually small. |
Here I show an eye screw from an ARH type key for contrast.
The outer diameter of the larger eye is 3/8", while the smaller
is 5/16". |
(click to enlarge) |