Matching Pair of Antique or Vintage Brass Lion Door Knockers w/ Plates

Description

Matching Pair of Antique or Vintage Brass Lion Door Knockers and Plates
Heavy patina
I don't know the age or country of origin and don't see any identification marks.
There are no holes, so I'm not sure exactly how they get attached. It looks like maybe holes still need to be drilled out.
The knockers are approximately 6" L x 4" W and weight 1 lb each.
The plates are about 2.5" across and weigh just under ounces each.