Maybe there is someone here who is interested in this machine:
http://cgi.ebay.de/IBM-5100-Erster-Tragbarer-Computer-John-Titor-Maschine_W0QQitemZ150384564875QQcmdZViewItemQQptZKlassische_Computer?hash=item23039e5a8b#ht_9251wt_1131
http://cgi.ebay.de/IBM-5100-Erster-Tragbarer-Computer-John-Titor-Maschine_W0QQitemZ150384564875QQcmdZViewItemQQptZKlassische_Computer?hash=item23039e5a8b#ht_9251wt_1131