Yet another Mignon, but this one with a serious Zamac-problem. (A small flock of Mignon Modell 4's have been passing by - giving good opportunity to learn how these can look fine and still be completely broken. Also to learn how these come apart - and go together again.)
The horizontal bearing on this machine was stuck solid in the cast-iron forked-lever from internal swelling. This meant that this Mignon could not type, as the index then won't budge vertically. When trying to remove this bearing to fix by sanding down, it unfortunately completely crumbled.