So lately, I've been giving my BS keyboards a little TLC, when I came across an interesting discovery. One of my Model M SSK's has a manufacturer date of 12MAY87 (May 12, 1987) which got me thinking, this might be the oldest SSK I've seen.
I did a brief search through a few forums and so far I haven't found an older SSK. Closest was an ebay auction for a 13MAY87 board.
Anyone out there with an older SSK?