This is a fantastic Yemen Royalist Registered Cover sent from Camp Mansur, with a "Delayed in Transit/THROUGH ENEMY LINES" mark in red on the front.  It was sent to Aden on October 8, 1964.

There are two pairs of wonderful stamps on this amazing cover.  They are a corner pair of SG R38, and a pair of R11.  Together, these value at L2200++ on cover in the SG Catalog. 

This right here is an absolutely stunning and rare Yemen registered cover, and a must have for any collection.

Ex Conde

This item is over $100 USD so I will ship it using Priority Mail in the states, and Registered Mail overseas.  This is to ensure that it comes with tracking and reaches you in a safe and timely manner.