Question 1

Is “Door knocker” in the public domain?

Accepted Answer

Yes. “Door knocker” is public domain and released under CC0, so it is free to download and reuse for any purpose, including commercially, with no permission needed.

Question 2

Where is “Door knocker” from?

Accepted Answer

It is catalogued from the open collection of The Metropolitan Museum of Art and is free to reuse under CC0.

Question 3

Can I use “Door knocker” commercially for free?

Accepted Answer

Yes. As a CC0 public-domain work it can be used commercially, modified and redistributed with no fee and no attribution required.

Title	Door knocker
Date	ca. 1560–70 16th century
Medium	Brass
Classification	Metalwork-Brass
Holding institution	The Metropolitan Museum of Art
Credit line	Gift of Irwin Untermyer, 1964
Rights	Public domain (CC0)

Door knocker

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