How do you know the keys are double shot?
Cherry DS font is fairly distinctive.
This^
But if you still aren't sold. it's too old to be anything else, and if you look carefully at some of the keys (numberpad + for example) you can see it there too.
Looks exactly like the board I pulled out of a dumpster a while back. Alphas are doubleshot and the mods are lasered or pad printed.
Good find! I was wondering the capslock, alt, etc looked a bit off.