In the USA Heil (1903) had similar products & prices. Bausch & Lomb (1904) was marginally higher.
1903: 1 Troy Ounce Platinum (Semi-Mfg, Retail) = ℳ 93.31 (USD$ 22.41)
1903: 1 Troy Ounce Platinum (Semi-Mfg, Retail) = ℳ 93.31 (USD$ 22.41)
Citation: Preisverzeichnis ...: Institut zur Anfertigung und lager chemischer ... Müller, Franz, Firm, Bon (1904) pp.
Draht:
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