I remember from school about radio, sound and light waves. It is interesting stuff.
This does look like a ruby laser on the stamp from 1965.
Thank you very much for question, yes, it should be from the second half to late 1970s i believe til tool configuration entered. BR
Thank you very much again, the Wenger Champ tool configuration continued to the end in 2014 if i remember correct. From the late 1980s it was not the largest BR
Hello Trond. In what year Wenger Champ went on sale? Do you have that data? Ecxelent page, great investigation work and great data for collectors.