Numismatic Rarities

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Mintmark and Year Denomination Description Price in US$ # of strikes
Windlass 1907 G 12.5 The 12.5 1907 Windlass gulden is a classic Guffingfordian rarity, available only in high grades. This makes the coin not affordable for the average collector in Guffingford, and most of these are seen in the hands of museums and private collectors around the world. $ 1,969,065 (Sloane Collection) 1012
A 1911 G 100 Perhaps the rarest coin in Guffingford, the 1911 A 100 guldens piece. Only thirty four are reported to exist, of which two are held by the National Museum of Guffingford. One has been in the hands of James Sloane, a famous collector who bought a specimen from the Hoogenbosch Mint right after it was struck. James Sloane always claimed to have purchased the very first, but this cannot be verified. The 2nd Sloane specimen has been sold for an unknown amount to an anonymous collector. $ 2,996,353 (Sloane Collection) 34(?)
A 1900 G 2.5 cracked die A notorious error, in 1909 the 2.5 A cracked die version was initially meant to test new steam powered minting machines. New dies weren't available, so the mint staff decided to use old 1900 dies for testing purposes. Whereas the struck and double struck planchets were supposed to be molten for the purpose of recoining them. However, this never happened since the coins were packed and put on a train to be spread to shops all over the country. Though over 1200 coins were struck, coins with original mint luster and the deepest cracks are the most valued. $ 1,091,500 (Rodriquez-Finch Collection) 1200
W 1910 Platinum G 20 All of the Guffingfordian coins bearing the W are extremely rare to find, not to mention buying. Since the Windhoek Mint was only a temporarily mint to suit the needs of the many platinum boomtowns in the north, the Windhoek Mint worked almost exclusively with platinum for coinage. Of all coins struck the 1910 20 gulden piece is the rarest. Because 1 gulden already packed a great deal of purchasing power, not many 20 gulden pieces were required to keep the economy going, hence the low number of circulation strikes. $ 2,137,288 (Sloane Collection) Around 80