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From Batman #213 (July-Aug 1969). The book that the unnamed Czech patriot raves about is indeed one of the finest comics in the entire Silver Age, and probably deserves a good look:
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One of my all-time favorite covers ever; the use of a B/W negative really makes that last panel, where Batman suddenly unmasks himself, pop out.
That's the opening story, certainly on any Bat-fan's short list. The second story, the Jungle Cat-Queen, is my personal choice for the finest Batman story of the Golden Age. It's a great story, features the Catwoman, has multiple death traps and beautiful Sprang artwork.
The highlight of the rest of the issue is the terrific Sunday strip where the Penguin's real name of Oswald Chesterfield Cobblepot is revealed.
So overall the dad of Vasik, Lidunka and Evicka definitely scored a classic comic. What a shame that it would be another two decades before Batman became generally available in the Czech Republic.