Bidspirit auction | The Acme Thunderer whistle, of
The Acme Thunderer whistle, of cylindrical form with side tube mouthpiece and suspension ring, the end cap with maker's roundel; stamped THE ACME REGd ENGLAND
The Acme Thunderer whistle, of cylindrical form with side tube mouthpiece and suspension ring, the end cap with maker's roundel; stamped THE ACME REGd ENGLAND