Ross, I simply would assume that orthographical rules weren't fixed at that time yet. Most people were poorly educated, so copying errors were common.
If you look at the Schaer cards there is LA*ROVE*D*FORTUN with the last character E missing, it looks like it did not fit on the page.
More background infos:
Mümliswil, CH roughly is located halfways between Solothurn and Olten. If you have a look at the
Swiss Map you will see that even Besançon, FR is not far behind the Swiss border.
Konstanz at the Bodensee (Lake Constance) is 30 miles east of Schaffhausen; before the reformation 1529 Schaffhausen even was under the jurisdiction of the archbishop of Constance (were Jan Hus was burnt on the stake).
Even
Rheinfelden is only a couple of miles east of Basel (cf. Johannes von Rheinfelden
Ludus cartularum moralisatus, where he writes that playing cards had arrived for the first time in 1377. By the way, he spent most of his life in Freiburg, DE, also not far north of Basel). So, this was and is one cultural area. Just to give you an impression, here is another picture taken last summer. It shows one of the beautiful restored old buildings of Schaffhausen from the same era:
Schaffhausen: Zum Ritter.
