UK, 1869: Griffin's Catalogue

The minimum weight items would retail ~£ 3./Ozt.  Where 1 Sq. Foot is understood to be 144 Sq. In. (929.0304 cm²), the special size rate @ 1 Sq. In. = £ 0.1013 ; @1 cm² = £ 0.0157.

The normal price appears to be £ 0.05 ; @1 cm² = £ 0.05? 

4 Platinum Spatulas or 2 Ozt Wire @ 2 Ozt, 


1869: 1 Troy Ounce Platinum (Wire, Retail) = £ 1.40 - 1.50 
.... ($ 6.81 - 7.30 ; USD$ 9.06 - 9.71)

1869: 1 Ozt Platinum (Basic Mfg, Ret.) = £ 1.40 - 1.50 
.... ($ 6.81 - 7.30 ; USD$ 9.06 - 9.71) 

c.1869
Citation: Appendix to the Sixth Report. Royal Commission on Scientific Instruction &c, William Cavendish (1870) p. 81

 

12/24/1869:

12/1869: 1 Ozt Platinum (Sponge, Ret.) = £ 1.40 ($ 6.81; USD$ 9.06) 

12/1869: 1 Ozt Platinum (Wire/Sheet, Ret.) = £ 1.50 ($ 7.30; USD$ 9.70)

12/1869: 1 Ozt Platinum (Mfg, Ret.) ~ £ 1.65 ($ 8.05; USD$ 10.70)

12/1869: 1 Ozt Platinum (Mfg, Specialty Ret.) = £ 1.75 ($ 8.50; USD$ 11.35)

.... ($ 6.81 - 7.30 ; USD$ 9.06 - 9.71) 

Citation: English Mechanic and Mirror of Science and Art, Volume 10 (1870) p. 367

1869: 1 Troy Oz. Platinum (German Producer: mfg) = £ 1.33 ($ 6.50 ; USD$ 8.6)

The difference between the price and Platinum employed in the 'Platinum Foil Battery' and 'Sheet Platinum Battery' is £ 3.97 and 3 Troy Ounces, so:

c.1868/9: 1 Troy Oz. Platinum (semi-mfg, whols.) = £ 1.34 ($ 6.52 ; USD$ 8.67)

Where the Grove battery unit cost for components (excl. Platinum) may be ascertained @ £ 2.24 for 12; ea. (ex-Platinum) @ £ 0.1863 and where the Dalgleish battery unit cost (excl. Platinum) may be ascertained @ £ 3.09 for 12; ea. (ex-Platinum) @ £ 0.2578 : check.

c.1869?:

Citation: Spons' dictionary of engineering, ed. by O. Byrne (and Spon). 8 div; By Spon E. & F.N., Ltd (1870), p.552

Where a Battery Platinum Sheet of 75.4 cm² weighed ~3.89 Gr, 
1 Sq.In. ought to weigh 0.33266 Gr., ∴ :

1 Ozt. Battery Platinum Sheet (London: Ladd) = 603.22; 93.5 Sq.In.

Citation: The American Journal of Science and Arts (1870) p.297





Where 144 Square Inches weighed 120 -130 Ozt, 1 Sq. In. = 0.833 - 0.903 Ozt (4.02 - 4.35 Grams per cm², very thick sheet.) Capt E. W. Ward's paper was published in 1850; he preferred 6 Platinum Sheets 2"x2" : 24 Sq. In.





A January 1869 Catalogue.

1868: 1 Troy Oz. Platinum (Chloride Salt, retail ) = £ 1.60 (USD$ 10.93)

Citation: Scientific Apparatus for Use in Schools, John J. Griffin, 22 Garrick St. Covent Garden, 1869 pp. 22

1868?

1869: 1 Troy Oz. platina (Ural ore) = £ 0.3863 ($ 1.88 Gold)