From Pathfinder Lost Omens Character Guide, which isn't enabled.

Pathfinder's Coin

ITEM 2

Price 30 gp

Usage held in 1 hand

Bulk —

This coin usually resembles ancient currency. An intricate matrix of gold and platinum wires inside the coin causes it to float an inch in the air and spin if placed on a wayfinder.

Activate command

Requirements The coin is levitating above a Wayfinder

Effect You give the coin a message of 25 words or fewer. The message repeats in your voice the next time the coin is floated above a wayfinder. A Pathfinder's coin can hold only one message at a time, and it replays its message only once.

Pathfinder Lost Omens Character GuideOGL