Abstract
We present new price indices for the period 1886-1929. These indices have several advantages with respect to the previous ones: i) they cover the whole period with the same methodology, and by reaching 1929 these series can be joined with contemporary price indices, ii) they include more products, iii) they use price data more homogeneous and reliable, iv) they are monthly price indices, v) their methodology is explicit, it follows clear and precise rules, and vi) they obey the basic consistency criteria that economic theory predicts, both from a theoretical and from an statistical point of view.