I came across this copper foil window which is part of a town house in Oudtshoorn, South Africa, that belonged to a family of European settlers. This family lived in South African during the dominion of the British Empire. They made their fortune in the ostrich feather business and used this house as their weekend town house. The house was build around 1900, the time that art nouveau was blooming in Europe. and copper was much more expensive than lead. They imported the copper foil glass windows from the UK, to exhibit their status and wealth.