This is a chasuble, the vestment (priestly garment) worn by a Catholic priest when celebrating the mass (the main service of worship). Prior to the 1960s, the priest stood facing the altar with his back to the congregation, so the back of the chasuble was visible most of the time. The front is more worn than the back because it has rubbed against the altar. The embroidery on the orphrey bands tells the story of the Life of the Virgin Mary, mother of Jesus Christ, from the moment the angel announced her forthcoming birth to her mother St Anne, until her journey to heaven after her death.
The silk velvet of the chasuble was probably made in Italy, which boasted the most sophisticated centres of silk manufacturing in Europe in the 15th century. The style of the embroidery on the orphreys is very similar to Florentine paintings of the early to mid-15th century. The shape dates to the 17th century or later. Precious silk and fine embroidery, especially containing metallic threads, were used economically and were often recycled.