Old of <a href="https://en.wikipedia.org/wiki/Ambra_Computer_Corporation" class="extiw" title="en:Ambra Computer Corporation">Ambra Computer Corporation</a>
Ambra Computer Corporation/IBM
Own vectorization, adapted from <a rel="nofollow" class="external free" href="https://archive.org/details/ambrarestorefloppies.7z">https://archive.org/details/ambrarestorefloppies.7z</a>