The following mint errors sold in the January 6-7, 2019 NYINC World Coins Signature Auction #3071.
Canada: Elizabeth II Mint Error Gold Proof "National Parks"
100 Dollars 1985 PR68 Ultra Cameo NGC
Sold for: $19,200.00
Elizabeth II Mint Error Gold Proof "National Parks" 100 Dollars 1985 PR68 Ultra Cameo NGC, KM144. Double Struck, and rather dramatically so. This gold Proof $100 coin has been double struck over about 60% of its obverse, warping the flan. Its very existence is remarkable considering the stringent production standards surrounding the minting of gold coins (as even the loss of a small amount of metal can represent a significant issue); what's more, the very fact it left the mint is astounding, being such a significant and obvious error. That being said, there is something immensely charming about this piece. Whereas numismatists are so used to seeing flat, motionless disks, this coin positively leaps out at the viewer, hurled into three-dimensions by the merciless crushing blow of the die. Every dynamic curve flows with gleaming luster, achieving a cameo frost to the devices even in its twisted state. A difficult piece to estimate as it is certainly unique; however, we do not doubt that its intrigue, rarity and significance will earn it pride of place in the most advanced collection of Canadian errors.
France: Napoleon I Gold Obverse Mirror Brockage
40 Francs ND (1807-1813) XF45 NGC
Sold for: $13,200.00
Napoleon I Gold Obverse Mirror Brockage 40 Francs ND (1807-1813) XF45 NGC, Type of KM688.1, or KM696.1. The mint is unknown. The obverses of these two types are virtually identical, therefore we will list both KM numbers. This is a truly startling error, as gold errors of any type are rare, and a full, bold mirror brockage of this 40 Franc type is possibly unique. The details are superb, with minor contact marks and the brockage side is truly amazing. The only example we have seen.
Ex. Abe Kosoff Estate Auction (Bowers and Merena, November 4-6 1985, Lot 5733, with original auction tag)
France: Napoleon gold Mint Error
20 Francs L'An 12 (1803/04)-A AU55 NGC
Sold for: $12,000.00
Napoleon gold Mint Error 20 Francs L'An 12 (1803/04)-A AU55 NGC, Paris mint, KM651. Mirror brockage on reverse. For the type, anything approaching Mint State appearance would easily be considered desirable. Almost never encountered in gold, the fact that the chirality of this brockage is so profound only further supplements the intriguing allure. Fundamentally pleasing surfaces, one of a kind character, and what is sure to be a conversation piece in its future owner's collection.