They seems in medium state, at least, but I think these are pretty rare. So, if somebody is interested .....
https://www.ebay.fr/itm/gro%C3%9Frechner-wechseldatentr%C3%A4ger-magnetkarten/184107517064?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
