Official Mail to Egypt's Delegate to the 1897 UPU Congress in Washington, D.C.

The 5th UPU Congress met in Washington, D.C. from 5 May to 15 June 1897.  The cover shown below, franked with the 25c G.D. Adolphe S.P. official, was posted from Luxembourg-Ville on 22 May 1897, to Youssef Saba, Egypt’s delegate and plenipotentiary to the Congress, and is backstamped 3 Jun 1897 at Washington, D.C.

On the reverse is the Grand Ducal Coat-of-arms with a special wax seal created for the Congress,  inscribed:

Govt G-D de Luxembourg – UPU Congress.