Dear Sandor,
Unfortunately, it is a big problem that the big old offices of the last few years are dissolving due to business closure, death or retirement.
In very few cases (actually only with small publishers) it is possible for the entire stock of forms or figures to be transferred to a new publisher.
The big exception is the continuation of the Kieler Zinnfiguren.
As a rule, the old publisher still wants high transfer prices for the forms, which means that only financially strong buyers strike;
Unfortunately, the stock of forms is split up much more frequently.
If you're lucky, the new editor will publish the takeovers of the forms.
Most of the time, unfortunately, not, and sometimes the molds disappear into private ownership.
Unfortunately, I cannot tell you where the shapes are for the figures you are looking for from the Swiss or Burgundian period.
But you can try to write or call Werner Fechner personally.
BG Christian