We have  Backplate nos Square Brass Vintage Salvage item.  It is 2 1/4" square x 3/16" in D.  The hole in the center is about 3/16" square.  It is being taken from the original box "Polished Brass HF Square backplate".   Upon listing I have 10 of these available.

Backplate nos Square Brass Vintage Salvage

$12.95Price