The phoenix tsuba in this collection is cast metal — a process that allows the intricate feather detail and spread-wing silhouette of the phoenix motif to be reproduced with high consistency across pieces. Cast tsuba have a long historical precedent in Japanese sword furniture; many antique examples from the Edo period were cast in iron or copper alloys rather than carved. The gold-accented variant on the Shikomizue configuration uses a brass-family alloy that holds fine detail well and develops a warm patina over time if left uncoated. For display purposes, the cast construction means the relief detail reads clearly even from a distance, making the phoenix imagery an effective visual anchor in a wall-mounted arrangement.