From a lettering/abbreviation point of view, the style and font used for 'NSDAP.' is not unusual, IMO. I've researched and studied primarily the SA, have read German for 45+ years, collected for 45+ years, and so on, and I feel that I can readily recognize typefaces that are typical of the period. Speaking of periods, I've seen NSDAP noted with periods between each letter, no periods, and the single final period, although in this case, it may represent the end of the sentence. It's the same with SA printed material--you can find it as SA, S.A., S-A, SA., etc. While I always take a sceptical position when examining major III. Reich items, and spend a fair portion of every day researching, I think sometimes collectors, armed with micrometers, 30X magnifiers, black lights, geiger counters, etc. might tend to spend much more time scrutinizing objects than the original makers or recipients ever did, or ever intended.
