Either the first or second puzzle ever with more than 10,000 pieces. This debuted in 1978 and my (well-worn) copy is from a 1985 reprinting. This puzzle is exceptionally hard to find. (Update: It seems I am mistaken about there being a 1978 version of this. The 1985 printing is the original release; the first 12,000 piece puzzle Ravensburger released is definitively "The Temptation of St. Anthony" by Hieronymous Bosch, which debuted in 1983.)
12000 piece puzzle, The Royal Castles Neuschwanstein, Rave…
3/4 SEALED RARE Ravensburger 12000 Neuschwanstein Castle Jigsaw Puzzle 1985
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RAVENSBURGER PUZZLE SUPER 200 Ritterburg Knight's Castle 1997 Made in France £8.62 - PicClick UK