USA, 1871: Dental Catalogue Prices

"Battery Platinum" was likely Platinized Silver, and  "Platina" was 70/30 Ag-Pt alloy.

June 1871: 1 Troy Ounce Platinum (Refined: Sponge) = $ 13.44  (USD$ 15.00)
June 1871: 1 Troy Oz. Platinum (Semi-Mfg, Trade) ~ $ 14.11 (USD$ 15.75)

Citation: Catalogue of dentists' materials, Johnson & Lund, Philadelphia (1871), p.241



1871: 1 Troy Oz. Platinum Alloy (80/20 Ag-Pt, Trade) = $ 5.50 (USD$ 6.14)
1871: 1 Troy Oz. Silver (Pure, Trade) = $ 2. (USD$ 2.23)
1871: 1 Troy Oz. Platinum Alloy (.999 Pt, Trade) ~ $ 15.80 (USD$ 17.64)

1871: 1 Troy Oz. Gold (24k, Trade) = $ 24. (USD$ 26.81)

Citation: Catalogue of dentists' materials, Johnson & Lund, Philadelphia (1871), p.98
 


July 1871: 1 Troy Ounce Platinum (Semi-mfg.) = USD$ 10.72 ($ 9.60)

Citation: The Manufacturer and Builder, Vol. 3, No. 8, ed.Peter Henri Vander Weyde, William Henry Wahl



A dubious or very low estimation for battery Pt:

A battery apparatus with 49 elements (1.5" x 0.5" = 0.75 sq. in.) has 36.75 sq. in. of refined sheet Pt, for a total value of $10., each strip costs ~$ 0.50, or 3.67 sq. in per $1.; $ 0.136 per inch square (x2, surface area.)

If the weight of a 3.5" x 0.75" (=2.8175 sq. in.) Platinum strip be estimated @ 0.0833 Troy Ounce (40 grains), the larger strips should weigh 0.1087 Troy Ounce or 52 grains, $0.01 per grain or $4.80 per Troy Ounce.

1871/2: 1 Troy Oz. Platinum (sheet) ~ $ 4.80 (Gold Rate)

US Imports:



c.1871/2: Grove's Battery