Hello Charlee - Yes, I've found the pictures of it now, and I've been grubbing around on the net for information about Kohler. Kohler was a partner of Dietrich, but they parted company and Dietrich later used the trade name Vesta. Pre-War Kohler and Vesta machines look very similar. The best information I have found about Kohler is on the Needlebar website in the article about L. O. Dietrich, the manufacturer of Vestas. Also, if you go to Treadle Lady's Youtube channel she has a video about a post-war Kohler zigzag machine in a cabinet. The cabinet has a wooden treadle like yours. It was made for the Russian market and she has a manual in Cyrillic.
So how did machines made in Eastern Germany for the Russian and Eastern European market end up in the States? You need to interrogate the person who sold it to you. There is a Cold War tale of intrigue attached to your machine.