The LMS Railway Guard's Whistle, also known as The Acme Thunderer, is a working and rather loud collectable piece of hardware railwayana from the United Kingdom. This whistle, representing the London Midland and Scottish Railway (LMS), holds a nostalgic charm for railway enthusiasts and collectors alike. With its authentic design and historical significance, this whistle serves as a unique reminder of a bygone era in British transportation. Perfect for adding a touch of vintage railwayana to any collection, this whistle is a must-have for fans of trains and locomotives.