Platinum: NYC Chemists' Catalogues (Various), 1854-1856

Citation: Descriptive catalogue of chemical apparatus, chemicals and pure reagents, By Edward N. Kent.  (Actually this is a collection from different vendors in different years; the pagination by GoogleBooks is chaotic!)  Various prices given for metals in ores of different grades & refinement: "commercial' means the unrefined ore, for example.

Edward N. Kent, NYC, 1854:
1854: 1 Troy Ounce Platinum (ore, wholesale)  $ 8.00


Page 51:
James R. Chilton, NYC, 1855
1855: 1 Troy Oz. Platinum (refined, manufactured, wholesale)  = $ 14.40



Page 51:
Edward N. Kent, NYC, 1855
1855: 1 Troy Oz. Platinum (refined, unmanufactured, wholesale)  = $ 12.00
1855: 1 Troy Oz. Platinum (scrap, wholesale)  = $ 8.00