Silver coin before cleaning

Silver coin after laser cleaning

Detail of Liverpool cenotaph (bronze) before removal of overpaint

Detail of Liverpool cenotaph (bronze) after laser removal of black overpaint

Detail showing carved figures on doorway during laser cleaning

Detail showing carved figures on doorway during laser cleaning

Laser removal of pollution layers from sculptural detail (Cologne Cathedral)

Gilded carving (Cologne Cathedral) during laser cleaning

Statue of Eros (aluminium alloy) prior to restoration

Statue of Eros after laser cleaning and restoration

Detail of limestone carving on exterior of St. George's Hall before cleaning

Detail of limestone carving on exterior of St. George's Hall after laser cleaning

18th century over-lifesized terracotta statue of Neptune, half cleaned (laser)

Terracotta statue of mother/baby during laser cleaning

Gilded cockerel during laser cleaning

Detail of medieval alabaster knight during laser cleaning

Detail of plaster model during laser cleaning; preservation of shellac coating