DSQ
c.1880s:
In France, "Platinum alloy" with less than 35% Pt was called 'platine au titre' - different dental Platinum alloys by standard weight ranged from 45-66% Pt.
1) Pt 66.67% / Au 22.22% / Ag 11.11%
2) Pt 58.33% / Au 16.67% / Ag 25%
3) Pt 41.67% / Au 25% / Pd 33.33%
c.1880s:
In France, "Platinum alloy" with less than 35% Pt was called 'platine au titre' - different dental Platinum alloys by standard weight ranged from 45-66% Pt.
1) Pt 66.67% / Au 22.22% / Ag 11.11%
2) Pt 58.33% / Au 16.67% / Ag 25%
3) Pt 41.67% / Au 25% / Pd 33.33%
Citation: The Metallic alloys: a practical guide for the manufacture of all kinds... William Theodore Brannt (1889)
1880: 1 Troy Ounce Platinum (Mkt: Semi-Mfg) = USD$ 7.97
1881: 1 Troy Oz. Platinum (Mkt: Semi-Mfg) = USD$ 8.69
1882: 1 Troy Ounce platina (semi-refined) = USD$ 6.
1883: 1 Troy Ounce of Platinum = $ 10.29 1883: 1 Troy Oz Platinum (refined, mfg, whols./import) = USD$ 6.50 - 7.50
c.1884: 1 Troy Oz. of Platinum (disputed low, US ore?) = $ 3.- 5.
c.1884: 1 Troy Oz. of Platinum (semi-refined, retail) = $ 8.
c.1884: 1 Troy Oz Platinum (refined, mfg, retail) = USD$ 10.89 - 14.
1884: 1 Troy Oz "Platinum" (generic range: all types) = USD$ 8. - 12.
1884: 1 Troy Oz Platinum (refined, mfg, whols./import) = USD$ 7.50 - 8.50
c.1884: 1 Troy Oz Platinum (refined, mfg, retail) = USD$ 10.89 - 14.
1884: 1 Troy Oz "Platinum" (generic range: all types) = USD$ 8. - 12.
1884: 1 Troy Oz Platinum (refined, mfg, whols./import) = USD$ 7.50 - 8.50
1886: 1 Troy Ounce Platinum (unmanufactured) = USD$ 6.
1887: 1 Troy Ounce Platinum (unmanufactured) = USD$ 7.50
1888: 1 Troy Ounce Platinum (unmanufactured) = USD$ 6.80 1889: 1 Troy Ounce of Platinum = $ 8.
October, 1889: 1 Troy Ounce platina = USD$ 17.50
March, 1890: 1 Troy Ounce of Platinum = $ 14.
October, 1890: 1 Troy Ounce of Platinum = $ 20.
1911; 1918:
1) White Gold: ..........................Pt 40% / Au 60%
2) Cooper's Gold (1) : ......................Pt 18.75% / Cu 81.25%
3) Cooper's Gold (2) : ......................Pt 29.17% / Cu 66.6% / Zn 4.15%
4) Cooper's Pen Metal (1) : .............Pt 50% / Ag 37.5% / Cu 12.5%
5) Cooper's Pen Metal (2) : .............Pt 50% / Ag 37.5% / Cu 12.5%
6) Cooper's ("Platina") (1) : ............Pt 25% / Ag 70% / Ni 5%
7) Cooper's ("Platina") (2) : ............Pt 0% / Ag 70% / Co 5% / Pd 25%
Platinum Alloys, generally (cited prior to 1890): "Cooper's Pen Metal"
1911; 1918:
1) White Gold: ..........................Pt 40% / Au 60%
2) Cooper's Gold (1) : ......................Pt 18.75% / Cu 81.25%
3) Cooper's Gold (2) : ......................Pt 29.17% / Cu 66.6% / Zn 4.15%
4) Cooper's Pen Metal (1) : .............Pt 50% / Ag 37.5% / Cu 12.5%
5) Cooper's Pen Metal (2) : .............Pt 50% / Ag 37.5% / Cu 12.5%
6) Cooper's ("Platina") (1) : ............Pt 25% / Ag 70% / Ni 5%
7) Cooper's ("Platina") (2) : ............Pt 0% / Ag 70% / Co 5% / Pd 25%
Platinum Alloys, generally (cited prior to 1890): "Cooper's Pen Metal"
c.1889:
1888:
c. 1830?
c. 1820:
c.1890: Dental Alloy
Platinized Silver Plate was recommended 80% Ag, 20% Pt; Platinized Silver Wire
66.7% Ag, 33.3% Pt
'Platina' just alloy (of Tin) 1880s - 1912:
