Sa'id bin Abi al-Hasan (may Allah have mercy on him) said that the hilt-cap of the sword of the Messenger of Allah (peace and blessings be upon him) was of silver. Qatadah (may Allah have mercy on him) said: I have not seen anyone who corroborated him on this.
This is mursal, and it is the mahfuz (preserved) version; it has also been narrated through another route as connected (mawsul) from Anas.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الزكاة / 7571