This is a very interesting keyboard. It came out on 8-11-92 and has the blue label on it.
Similar to the IBM 1370477 keyboard, however, it is the FIRST keyboard I have seen with a blue
label with NO drainage channels.
Reaaly? Oo My 1406 blue label from '93 doesn't either... XD
Did I say the 1406? Or the 1401? This is pretty unique. To be honest, I didn't think any USA Blue Labels had no drainage channels. Interesting that you mention this. I couldn't find any Blue Labels without drainage channels at all. Even my nephew's 1401 has drainage channels and his was made 02-Jul-93.
Maybe it's different with the Greenrock boards. This one is U.S.A.