Rare Limited Edition Pair Of Sterling Silver Titanic Acme Thunderer Whistle Cufflinks. The were made in a very limited edition to celebrate 100 years since the sinking of the Titanic. These Sterling Silver Miniature Whistle Cufflinks Are Fully workable replicas of the World Famous ACME Thunderer Whistle. They are engraved with "TITANIC" and "THE ACME Thunderer, made in England". They are very solid and weigh a substantial 25.0 grams approx. They are fully hallmarked for sterling silver with the makers mark "J.H & Co" for J Hudson & Co, the lion passant, 925, the Anchor for Birmingham and date letter "m" for 2011. They are in excellent condition.