Citation: L'Économiste français, Vol.4, Pt. 2 (9/9/1876), p.350
The 4 Escudos Coin should weigh 3.3548 g. (0.10786 Ozt) with 3.0193 g. (0.0971 Ozt) Fine Gold. In alloy to mimic the .900 standard Gold of Spain, a full-weight Gold-plated Platinum planchet would be 81.5% Pt, 18.5% Cu, or ~ 2.73 g pure Platinum.
4 Escudos Isabel II, 1868: 18 mm; KM#631.1, Fr.337
3.29 gr, Platinum .815 ; "SUP/FDC" (~MS-63?)
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4 Escudos Isabel II, 1868: 18 mm; Calicó 112 ; Fb. 337
3.36 gr: Gold .900 ; "EBC" (EF-40?)
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4 Escudos Isabel II, 1868: 18 mm; R TTB.;
3.34 gr, Platinum .815 (2.72 g. Pt)
Price Realized was € 250 (+12.10% = € 280.25/ USD$ 363.71) on November 23 2012;
11/23/2012: Platinum Spot was USD$ 1,584, so the numismatic premium was 162.36% over intrinsic.
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4 Escudos Isabel II, 1868: 18 mm; Fuchs 60; Schl. 271.1;
3.29 gr, Platinum .815 (2.68 g. Pt)
Price Realized was € 280 (+23% = € 344.40/ USD$ 468.71) at Fritz Rudolf Künker GmbH & Co. KG Auction 251, on July 3, 2014.
7/3/2014: Platinum Spot was USD$ 1,502, so the numismatic premium was 180.89% over intrinsic.
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4 Escudos Isabel II, 1865: 18 mm
3.35 gr Gold .900; "BB+" (VF-30?)
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4 Escudos Isabel II, 1868: 18 mm? (cf.KM.631.1; cf.Fr.337)
3.33 gr, Platinum .815 (2.714 g. Pt); "BB+" (VF-30?, not EF)
Price Realized was £ 120. (+24% = £ 148.80/ USD$ 241.68) at St. James's Auctions Ltd, Auction 30 on 9/29/2014. Platinum Spot was USD$ 1,306. so the numismatic premium was 219.17% over intrinsic.
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