According to Official Guinness Records,
The largest collection of ear trumpets consists of 359 items and was achieved by Myk Briggs (UK) in Pant, UK, as confirmed on 29 October 2016.Myk amassed his collection, along with a wealth of knowledge and historical data, over two decades. A lot of work (also quite a large investment) has gone into building such a large collection of ear trumpets.He hopes his achievement will lead to his historically valuable archive being housed in a National Museum and on permanent public display.
For a complete list of 2016 records, please visit 2016 Guinness Records in United Kingdom.