Antique Chief Seattle Indian Cast Iron Sidewalk Road Utility Building Salvage

Description

I'm not certain what this was used for but I believe that this very well made Antique Chief Sealth (Chief Seattle), High Relief Cast Iron Artwork that I found in a very old estate in the Seattle area, was perhaps used for a Sidewalk or Road Utility Cover or it may have been used as a Memorial in a park maybe Pioneer Square in Downtown Seattle
or a Large Plaque from Building Salvage that may date back to the late 19th or early 20th Century...through all of my digging and research I've been unable to find any other examples of this of any kind, which leads me to believe this may have been a one of a kind created for a special purpose! The Chiefs face looks very much like known photos and other sculptures that I could find of him, it also reads "SEALTH" and "RIP", It measures approx. 12 7/8" wide X 17 7/8" long X 1/2" thick around the diamond surface area and the edge that tapers in about 3/8" difference from the front measurements to the back measurements, and
from the highest points front to back at about 1 1/2" thick and weighing in at about 28 lbs. with tight weathered black enamal paint, some surface rust and dirty, none of which affects the integrity of the piece.
Note: Pioneer Square marks Seattle's original downtown, dating back to 1852. Rebuilt after the devastating "Great Fire" of 1889, the district is characterized by late nineteenth century brick and stone buildings and one of the nation's best surviving collections of Romanesque Revival style urban architecture.
Being sold in as is, wonderful, used, antique condition, that should perhaps be in a museum or displayed in a Gallery!
I would like this to stay in the Seattle or Northwest area but its up for grabs...shipping is free for the USA Only.