3583 Service ID number written in blue ink on sticker on keyboard
overall: 9 x 20 x 17 in
This is an Osborne 1 in the later "blue" case with a detachable power cord and hinged power-cord compartment cover. There is a sticker on the keyboard that says,"Support (800), The Xerox Factor, 1-800-243-7822, Support (800), Service I.D.# 3583.". Key caps show very little wear, in striking contrast to the outside of the case.