I think I have read somewhere that inflation in the end of the 17th - first half of 18th century was almost zero or there was even a deflation. I may be wrong. Maybe someone has a good source?
The book mentioned in the article, Capital in the 21st Century, shows this in really interesting detail. I can't remember the details myself, but the idea we have of inflation being normal is actually highly abnormal in the history of humanity. Can't recommend the book enough, really interesting to see how unique the last 100 years of high growth is compared to history due to the world wars and how we may be returning to "normal" levels of inequality.