From:Mike Lynch
Subject:RE: upper case casting dates Date:Thu Feb 1 17:26:18 2018
Response to:6763

my upper casting turns 101 years old tommorow, it's 1-31-17, of course
here in new zealand it will be 31-1-2017 as we do things properly... I have a
second case with the same date in it, did they change these often?

My best guess is they used the same casting date for several hundred
cases and canged it every 3 months or so. I have been told there are only
4-5 different casting dates for the entire 1917 year