Favorite lock/key/safe/vault computer desktop image?

[wylk]

Are there any favorite images you'd like to share as regards computer desktops and/or screen savers? Earlier today I set the following on my PC:



I did shrink the above for posting to antique-locks. The original is via http://brook-ward.com/pitt-test/ though a larger version that's more appropriate for desktop use is at http://3.bp.blogspot.com/-a4YuTxU9Jt...Bank+Vault.jpg. This was the Washington Trust Company in Washington, PA.

My second choice was the following though I want to un-tilt it first:



Again, I shrank the above for posting. This is a Chase Bank next to the Drury Plaza in San Antonio, Texas. The image is via https://www.flickr.com/photos/tongho58/7260330508. Can anyone identify the door's maker?

Does anybody have other candidates for desktop images?