Antique civil war era Brevete Leather locking Black handmade Messenger B…

Antique 1800s Victorian era, Brevete Messenger Bag or Purse 9" x 6" black leather with red leather interior. Aged through the years. My guess would be Civil War era, (1861 to 1865). I was told this was a messenger bag due to the lock. I do not have the key.