In the addendum-list from May 24, 1941 (nr. 51) it was noted to be 745 as Thann at Baden and not as Tann.
There do exist various Tann, as well as various Thann in Germany (Niederbayern and Oberpfalz) as far as I know,
but if these are the Thann as noted May 1941, I do not know.
I think a town at Alsace or nearby the border is meant as also the other numbers from about 740 through 747 are
from that area.