Estonia #71b 5 Krooni (1992) - RM121.00

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Paul Keres (1916 – 1975), was an Estonian chess grandmaster. Narrowly missed chances at a World Chess Championship. Many consider Keres to be strongest player never to become World Chess Champion. Nicknamed "The Crown Prince of Chess. Wikipedia
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Ivangorod Fortress is a Russian medieval castle established by Ivan III in 1492 and since then grown into the town of Ivangorod. The fortress overlooks the Narva River opposite the Narva Hermann Castle and the Estonian city of Narva. Wikipedia

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