what makes this so great is that it looks contemporary to whats being done now 40 years after it's creation.
i am always in awe of posters that just use text. Dirk Fowler does it. The Hella poster he did STILL blows my mind.
Good guess - it's from 1962. It's up on ebay right now but the auction doesn't start for a few days. It's an awesome German auction house with dozens of Kieser posters. LOTS of vintage travel/beverage/etc. too. By the way, this poster's about 24" x 33" - it must be awesome up close.
Looks like probably between 1961 or 63. What I wouldn't give to have been at one of these shows. This CD set is great documenting the Euro tours with the classic quartet. http://www.cduniverse.com/search/xx/music/pid/2119539/a/Live+Trane:+The+European+Tours.htm