deskthority

sharktastica wrote: 17 Dec 2021, 09:03 lmfao: https://www.reddit.com/r/MechanicalKeyb ... quivalent/+1

The link doesn't' look spammy or malicious, it's just a Reddit thread link.

JP! wrote: 18 May 2023, 23:15

sharktastica wrote: 18 May 2023, 21:18 [*] 55 = Greenock: spotted at the start of serial of most IBM UK Model Ms from before 1996,

Pulled from my database , an early production Model F AT. I was wondering what this particular ID meant. I didn't believe it to be the 55th unit produced.

AT.jpg

Ah this one is interesting.

Yes, the letter at the beginning of an IBM Model M serial number does mean something special. The letter indicates the plant where the keyboard was manufactured.

A: Lexington, Kentucky
B: Chicopee, Massachusetts
C: Austin, Texas
D: South Carolina
E: Japan
F: Mexico
G: Taiwan
H: China
So, your ...

I have three 1986-'87 1390120s. One weighs 5.5 lbs (2495g), one weighs 5 lbs (2268g) and the 3rd one is 4.95 lbs (2245g). All have matte "rainbow" steel backplates. Question, what could account for the weight differences between the 3? The 5.5 and 5 lbs were made only one day apart (May 12 and 13 ...