Yes, I shouldn't have been so lazy and should have posted some of those too In any case the adverts confirm that the drum cannot be from post-1945 because Hess was not producing in Klingenthal/Sachsen then. After the war the company name changed to "Hess Musik" as cemifor shows..
A very informative and interesting thread. I have enjoyed reading the facts, and no "I'm the expert here" statements However, I have a nice hole in my pocket