![Baldwin Hardware 4 Inch Center to Center Door Knocker with Observ-O-Scope Door Viewer, Venetian Bronze 0103112 | CabinetParts.com Baldwin Hardware 4 Inch Center to Center Door Knocker with Observ-O-Scope Door Viewer, Venetian Bronze 0103112 | CabinetParts.com](https://www.cabinetparts.com/media/images/p/m/baldwinhardware-BAL0103112-706c4fa95eae5.jpg)
Baldwin Hardware 4 Inch Center to Center Door Knocker with Observ-O-Scope Door Viewer, Venetian Bronze 0103112 | CabinetParts.com
![Prime-Line S 4235 Door Knocker and Viewer, Diecast Construction, Antique Brass Finish (Single Pack),Brown - - Amazon.com Prime-Line S 4235 Door Knocker and Viewer, Diecast Construction, Antique Brass Finish (Single Pack),Brown - - Amazon.com](https://m.media-amazon.com/images/I/71O9SJOsgHL.jpg)
Prime-Line S 4235 Door Knocker and Viewer, Diecast Construction, Antique Brass Finish (Single Pack),Brown - - Amazon.com
![Vintage Hardware & Lighting - Small Provincial-Style Door Viewer or Speakeasy with Door Knocker (ZLW-336) Vintage Hardware & Lighting - Small Provincial-Style Door Viewer or Speakeasy with Door Knocker (ZLW-336)](https://www.vintagehardware.com/prodimages/ZLW-336a__Small-Provincial-Style-Door-Viewer-or-Speakeasy-Polished-Brass.jpg)
Vintage Hardware & Lighting - Small Provincial-Style Door Viewer or Speakeasy with Door Knocker (ZLW-336)
![Anvil Mark Part # 103105 - Anvil Mark Door Knocker With Viewer In Antique Brass - Door Knockers - Home Depot Pro Anvil Mark Part # 103105 - Anvil Mark Door Knocker With Viewer In Antique Brass - Door Knockers - Home Depot Pro](https://content.interlinebrands.com/product/Image/Detail/10065/804115_usn.jpg)