My amulet collection - Somdej Phra Tat Phanom 2401 (metal alloy)

This is a 153 year old Somdej from Phra Tath Phanom (metal alloy).

There is a small piece of gold plate at the back of the amulet.

A very thick layer of earth mixture is covering the amulet,
so the image of Shakyamuni Buddha is not clear.

This is a sample of the how the metal alloy Somdej amulet look like
 after been clean with water and brush.
It is so "gold" color that I thought it is made of gold.