Two-Part Round Door

[wylk]

Here's something unusual, a round vault door made in two parts. This is common with rectangular doors. Any idea who made it? This is at the Spring Hill Suites by Marriott (http://www.marriott.com/hotels/trave...n-inner-harbor), in Baltimore. See also http://1800recycling.com/2011/08/repurposed-bank-vaults for more images (and other recycled vaults).