This is interesting. I've always been a fan of Art Deco, but I didn't know there were any Japanese examples; I've mostly seen French and American. I feel like some of these have a more timeless appeal than some of the typical western examples.
Somewhat off-topic, but font can really have a huge impact on non-native readers. I rarely have problems reading things in Japan these days, but some of the typography here is downright cryptographic.
I was thinking the same thing. The bottom two posters are much easier for me to read than the top ones because the fonts are more like the ones in my textbooks or in the newspapers.
That said, the top two posters' typography is much more interesting and a native Japanese reader would have zero difficulty reading them.
For what is worth, I'm not a native speaker but the only one I find hard to read is the top poster. The second poster's typography is stylized but not harder to read than the average handwritten sign or menu. It says 近代乙女心.
If you're into this kind of stuff and you're in Tokyo I suggest you check out the ADMT (ADverising Museum of Tokyo). It's in Shiodome, walking distance from the Shimbashi station (and many other stations). Last time I was there they had a large collection of ads from that period with similar styles.
Also it's re-opening in 2 months at/near the Tokyo SkyTree but the Tobacco and Salt Museum used to have books and books of old cigarette covers which lots of art from that period. I assume the new one will too.
