Cylinder Seal Electrotype Group

Rectangular-section arms with a round disc to the centre and an integral loop. 18.7 grams, 67 mm



Ex Cambridgeshire, UK, collection, 1990s.

Featuring a gold mount with twisted ropework border and scalloped edges securing bevelled glass coverings, one side depicting nimbate Saint Catherine of Alexandria wearing a pale blue dress with a red cloak, holding a gilt palm frond; the other side with Saint John of Nepomuk dressed in clerical attire and holding a gilt cross and a palm frond. 29.1 grams, 43 mm



Acquired on the European art market.

Saint Catherine of Alexandria was a Christian saint and virgin who was martyred in the early 4th century at the hands of the Emperor Maxentius. She was both a princess and a noted scholar who became a Christian around the age of 14, converted hundreds of people to Christianity and was martyred around the age of 18. More than 1,100 years after Catherine's martyrdom, Joan of Arc identified her as one of the saints who appeared to and counselled her. Saint John of Nepomuk (c. 1345 – 20 March 1393) was the saint of Bohemia (Czech Republic) who was drowned in the Vltava River at the behest of Wenceslaus IV of Bohemia. Later accounts state that he was the confessor of the queen of Bohemia and refused to divulge the secrets of the confessional. Based on this account, John of Nepomuk is considered the first martyr of the Seal of the Confessional, a patron against calumnies and, because of the manner of his death, a protector from floods and drowning. Verre églomisé is a French term referring to the process of applying both a design and gilding onto the rear face of glass to produce a mirror finish. The name is derived from the 18th-century French decorator and art-dealer Jean-Baptiste Glomy (1711–1786), who was responsible for its revival. Glomy's technique was a relatively simple one of applying decorative designs in a combination of plain colour and gilding, usually to glass picture frames. However, over time, it has come to be used to describe nearly any process involving back-painted and gilded glass, however elaborate.

Showing a royal figure on the left, holding the reins of his caparisoned horse, at the centre a yogi beneath an arch with a tree behind and two bovines gazing at him, tufts of long grass in the foreground with multiple faces emerging between the blades; set on a display stand. 258 grams total, 15.1 cm wide including stand



From the collection of David Donlan (1947–2025), a dedicated and lifelong collector with a passion for the ancient world and the natural sciences, forming his collection from the 1960s onwards, using many reputable dealers across the United Kingdom, including the well-regarded Coincraft and The Parthenon Gallery.