Civil War Relic, Lock, B + O Railroad, Barrel Lock

Description

Here's three locks.  On the left is a lock with no key from the much fought over B + O Railroad.  Key hole cover still slides.  The lock in the middle I'm not familiar with and may be post war.  No key.  Key hole cover still slides.  On the right is a barrel lock that I believe is Civil War era or even before the war.  The barrel lock has a key and still works.  I'm not an expert on locks but lock collectors will know all about these locks.