[Low-Tech] Smallsword with the Bronze Age 'Rapier?'

[Pursuivant]

So the basic concept is a narrow bronze thrust-only knife- or sword-like weapon?

Use the stats for an Estoc, Tuck, or Large/Small Stiletto depending on length, change the material to Bronze, adjust damage and breakage stats as appropriate, and change TL from 3 or 4 to 1.

While the GURPS melee weapons catalog is extensive it isn't comprehensive. When you run across an oddball weapon think which existing weapons come closest, then fiddle with the stats as necessary.