View Full Size Image of Becera (Young Bull), Masks by Artist Unknown
This is an old mask showing signs of repeated wearings. It was probably used in La Danza de los Vaqueros (The Dance of the Cowboys). See Donald Cordry Mexican Masks
Many Mexican fiestas feature a mock bullfight "dance" in which a boy in bull costume and with a bull mask over his head, charges the crowd while fireworks explode from a structure carried on his back.
"Unknown artist" is appropriate when a work of art is unsigned and a supported opinion about who made it is not available (on Savvy Collector).. "Attributed to" precedes the name of an artist when information suggests that it likely was made by that artist (on Savvy Collector).