XT keyboards (and missing decal)

On 11/15/2014 01:05 PM, Chuck Guzis wrote: Interesting - I know there were crappy clones around which weren't as heavy-duty, but I don't recall seeing any with the buckling-spring mechanism (which doesn't mean to say that they didn't exist, of course!) Anyway no, there are no external markings. However, I just opened the case and the guts are labeled as IBM. It's got a "shop date" of 5025, whatever that translates to. The main keyboard IC is marked: 8493518 LC 862092 A 8421 C K CP5092 The "8421" is quite possibly a date code; the 14-pin IC next to the controller IC has a date code of 8427. That's a couple of years older than the rest of the machine - but having said that, there are ICs that old in the main system too, mixed in with ones from '85 and '86, so it's perhaps not a definitive answer. Interestingly (well, perhaps to us geeks, anyway) the internal label claims that it's a Model F - which goes against what Wikipedia claims (i.e. that the Model F was the 84-key AT keyboard, replacing the 83-key XT unit) cheers Jules