I have four Casio Accounting calculators. Two are battery-powered Model #HR-15OTE (Big 12 Digit, 2 color printing) and two are ones you plug into the wall. One of those is Model #HR-100TM and the other one is “Tax and Exchange” #HR-15OTE.
They are all gently used and in good condition. I can send photo.
If you are interested in one or all four, please email me to arrange a pickup or drop off. firstname.lastname@example.org