IBM Model M SSK 1370475
Blue Logo SSK produced by Lexmark.
Like all later Model M keyboards this SSK has built in drainage channels.
The Label on the back has Lexmark written on it, aside from that it looks like a classic IBM Model M label. Lexmark later used much smaller labels with out the protective film.
/*pz*/char p[]=" ELPRTWZ";unsigned z[]={553179788,1641},
_=14;main(){while(_--)putchar(p[z[_/012]>>3*(_%10)&7]);}
(K) All Rites Reversed