Hi. I don't think it is a case of 'either / or'. The amber - rather than yellow - petals, and lack of clear imprinted veins on the leaves suggest it is later than 1845 - 1860, but it may not be as late as Dupont (ie 1920 - 1930). Baccarat made pansies all the way through from 1845 to 1930 or later, though not always in large numbers. I suspect this one is late 19th century, as it is quite well made.