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IBM Model M 1390131

The precursor to the famous 1391401.

The 1390131 can be identified by the square silver logo on the right hand side, the removable black spiral cable with a DIN5 connector and the LEDs underneath the logo.

My 1390131 has a very early production date (1986-04-03), a low serial number and like every Model M produced in the US up to May of 1986 a barcode on the label.

The 1390131 was introduced 1986.

 

/*pz*/char p[]=" ELPRTWZ";unsigned z[]={553179788,1641},
_=14;main(){while(_--)putchar(p[z[_/012]>>3*(_%10)&7]);}

 

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