What happened to the original brass plates?

I searched and saw your answer to this question, but it didn't answer it. Do you or any church historian know what happened to the brass plates after Mormon transferred them onto the gold plates?

Book of Mormon Evidence: Brass Objects

Perpetual Black Brass Plate with Border Engraved Plate - 1 x 3.25 Decade Awards 467-49

File:A large brass plate 02.jpg - Wikimedia Commons

2 gand push button light switch plate made of heavy gauge solid forged brass beautiful aged brass finish laquer coated dark natrually aged petina

Classic Accents Aged Antique Brass 2 Gang Push Button Switch Wall Plate

The Mystery of the Plate of Brass

Antique M.hohner ECHO Bell Metal Reeds C Real Brass Plate Harmonica Made in Germany Vintage Collectable Christmas Birthday Gift for Him - Canada

TRC BRASS PRODUCTS Label Plates – Omoi Life Goods

Large 13 ¾” Signed Original Vintage Handmade South American Brass - Ruby Lane

Brass plate inscription hi-res stock photography and images - Alamy

What Parts of the Old Testament Were on the Plates of Brass?

Vintage Old Reclaimed Salvaged SOLID Cast Brass Door Knob Doorknob Key – PennAntique

Brass plate hi-res stock photography and images - Alamy

Q&A about LDS Prophet Joseph Smith

S.S TRADERS Small Pure Brass Plate for Puja / Diwali / Bhog Thali with Beautiful Flower Embossed Design (Golden) Set of 2pcs : : Home & Kitchen