To continue, the fancy cancel from the Annapolis P.O. is decent, but indistinct. The CDS from the Annapolis P.O. is superb!
Lastly, as for the condition of the envelope, it's in pretty good shape for something over 146 years old! It's very clean! The envelope has been reduced some at the left side where the envelope was opened by Lt. Tyler. The back flap is more than 90% complete, though. Noted imperfections aside, this is still a nifty example of mail to Lt. George H. Tyler, then serving in the U.S. Navy as an officer on the U.S.S. Plymouth!