Hewlett Packard HP 28S Advanced Scientific Calculator 

Fully Tested Working 

Made in 1986 USA

Comes with 3 Brand New Duracell special N-Cell Batteries

Having the new batteries saves you from having to spend $15 to buy them just to use the calculator

Missing one of the 4 rubber feet

Battery Cover and compartment are clean (please see pictures) and locks down as it should.  It seems to be rare to have one with a fully functioning and intact original battery bay cover.

Please see pictures for full condition details

Comes with calculator and batteries only