|horn dia||84 mm|
|marks||PALATINE ENG.CO.LD LIVERPOOL REG 425500|
|seller note||Edwardian vulcanite bamboo handled hearing trumpet aid, Palatine Eng Co Ld, Liverpool,
registered number 425500, 41cm diameter
|comment||This is described as a hearing trumpet by the auctioneer and was used by the water companies to listen to water flowing in pipes.|
What a nice piece of related history. I now have a second head bought with #353 which I can use to show the mechanism.