Nubian Monuments - Sierra Leone

Stamp issued in 1996 by Sierra Leone to commemorate the 50th anniversary of the UNESCO.

The title says "Monument of Nubia at Abu Simbel (Egypt)" but strangely shows the entrance of the temple of Philae as can be seen from the picture below!

Is this a fake? Unfortunately, I do not know anything about this stamp so if you have any information about it, do drop a comment.

UNESCO Campaign - Morocco FDC

Colossal Statue of Ramses II at Abu Simbel

First Day Cover issued in Casablanca, Morocco
on 03 October 1966
to commemorate the 20-year anniversary of the creation of the UNESCO

UNESCO Campaign - Chad FDC

UNESCO Campaign to Save the Monuments of Nubia,
Ramses II on his war chariot, painting from Abu Simbel temple

First Day Cover, Fort-Lamy, Chad
09 March 1964

UNESCO Campaign - Egypt FDC

Campaign to Save the Monuments of Nubia

The Coronation of Queen Nefertari, from the small temple of Abu Simbel

First Day Cover, Cairo, Egypt
31 October 1962

UNESCO Campaign - Egypt FDC

Campaign to Save the Monuments of Nubia

The Rock Temples of Abu Simbel
First Day Cover, Cairo, Egypt

28 April 1966