United Kingdom. A Silver Sgian Dub, by Peter Henderson 1911

A silver sgian dubh, featuring Celtic design silver mounts, hallmarked Glasgow 1911 and with maker mark PH, intricate carved knotwork pattern blackwood handle, blade marked Peter Henderson, Glasgow however has been exposed to water and displays rust points, matching scabbard also with silver fittings, remains fine. 

Footnote: Peter Henderson was born on 14 November 1851 at Inverkeithing, Fife and his company, Peter Henderson Limited, was founded in 1880. He took over the premises from Donald MacPhee who had been in business since 1868. Peter Henderson was Pipe Major of the Glasgow Volunteers and won the marches at the Northern Meeting, 1884. He also published bagpipe music, such as the Henderson’s Collection 1888. Henderson died aged 51 and the family continued to run the business until 1973 when it merged with R G Hardie bagpipe makers.