This MBO Junior manufactured in Germany is similar to the KIT-calculator Mini 73 sold by Ellenberger Electronic AG.
MBO International Electronic GmbH, Jena was founded 1973 and could be called the first company producing calculators in Germany. Already in 1976 MBO started to place their brand-label on Far-East OEM calculators, within the Datamath Calculator Museum you'll find some Toshiba based designs:
| Year | MBO designation | Toshiba designation |
| 1976 | Conti 10 | Homeland t.b.d. |
| 1976 | Conti 20 | Homeland t.b.d. |
| 1978 | LC 2014 WA | LC-834WA |
| 1978 | ALPHA 502 | SLC-8261 |
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