My favorite old school foreign paper money is the old Bank of England pound notes that were huuuuge.
Why?
Because they're huuuuuge!
Conversely I have some 1920s Austrian currency that is fairly tiny, it looks more like a coupon than actual money and is printed on really, really slick shiny paper. The most raggedy ass money I ever saw were Wiemar Reichmarks, you could practically feel the shredded rags in the grain of the paper and if you held it up to the light it looked like a frickin screen door. A couple dumptrucks of them and you could, maybe, buy yourself a screen door.