Yes Bill, apologies!! I didn't mean to derail your thread.......honest. Don, some are date codes and some aren't. I've decoded them for wartime on my site: http://toolarchives.com/plomb-2-letter-studyd42jeep wrote:Bill,
Sorry for the temporary Plomb derail on your Wright thread, but I thought that the two letter codes on some wartime Plomb were simply date codes. Maybe I just haven't run across Plomb with the AC code.
-Don
However, there are some tools where the code is not in the correct spot, or have the wrong finish to be wartime. You are correct though, most AC codes are date codes denoting January, 1943.