The TC-61 was produced by Gretag AG in Zurich, Switzerland.
TC-61 closeup. Click on image to enlarge. TC-61 connected up to a Siemens T-100 teletype. The controller for the system is in the lower right hand side. All photos in this table via Walter Schmid, HB9AIV
Contributors and Credits:
1) Walter Schmid <hb9aiv(at)swissonline.ch>