Well,yes: heat up the fingerboard for removal, being careful not to ignite the highly flammable celluloid binding- best to remove it first. Remove the fingerboard and the broken rod, then fill the old channel with new wood, and re-rout for a modern replacement(which likely won’t fit the original channel). Reattach fingerboard and binding. It will probably be easier to do all that, with the neck removed from the body(it might well need a neck reset anyway).
|