The glasshouses at Recuenco and in the towns near Guadalajara created less refined glassware. Attributions are difficult, but we know that glassworks had been established there as early as the 16th century. "Recuenco-type glass" was marked by colors deeper than at other sites. The glass frequently contained bubbles and had a yellowish (Figs. 25 and 26) or greenish (15) tinge. Its high soda content produced unstable wares that gradually lost their brilliance and transparency due to crizzling. The forms of these glasses were highly original, and they offered a wide-ranging typology that was somewhat removed from the fashions dictated by the great European glassmaking centers in Venice, Bohemia, and France. The handles of these objects were decorated with pinched trails that extended vertically in elaborate crested shapes. Like other Castilian glass wares, these vessels had no engraved or enameled decoration. (see 59.3.4)