In modern day terms, how much was $20 in 1860?

MOROCCO - TANGER PANORAMIC VIEW - engraving from 1860 ARGENTINA - BUENOS AIRES IN 1823 - engraving from 1860 RARE INK BLUE POTTERY INK TOTALY MINT FROM 1860-1890 BL RARE INK BOTTLES 4 OFVE THE 3 WHITE and 1 HONEY RAREINK ...
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