carve, engrave, chisel
鐫 centers on cutting into a hard surface to create a design or inscription: carving, engraving, or using a chisel to shape material.
鐫 combines 金 (metal) with 雋, which likely contributes the sound and may relate to cutting or carving. The exact historical development is uncertain.
The left side is metal 金, and the right side 雋 looks like a complex tool with a bird-like top. Imagine a metal chisel with a decorative handle carving into stone.
For セン, picture a sculptor carving a metal cent (coin) with a chisel: cent -> セン, and the metal coin is engraved.