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Auction: 20122 - Spink Numismatic e-Circulars 2 Part I: Toy Money, Tokens,Tickets and Medals
Lot: 722

Middlesex, London, Coventry Street (Joshua Henderson), Halfpenny, 1795, THE FILTERING STONE WARE • HOUSE, COVENTRY STREET LONDON, rev. FOR PURIFYING WATER, sandstone percolation device, 1795 in exergue, edge plain, 6h, 8.87g (Conder 86/141; Atkins 92/210; D&H 292), chocolate patina with residual lustre in recesses, good extremely fine

Provenance
Purchased Whitmore



Water was poured through the top of the device into a depression into a large sandstone, a natural filtration rock located around the globe above impervious aquifers. The water percolated through slowly at the rate of about one gallon per hour and could restore water to a more pH neutral balance. It has also been considered a helpful process in reducing the transmission of cholera. The business owned by Joshua Henderson, relocated from Coventry Street in October 1802.

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Estimate

Starting price
£30