Watch List notes:

Saudi Arabia (3) a set in high grades comprising 5 Ryials Pick 17b corrected word "khamsa" at lower centre on front, L. AH 1379 (1961) - (1977) , serial number 45/582713, Irrigation canal, King Ibn Abd Faisal al-Aziz & Jizan valley dam, choice UNC. 10 Ryials Pick 13 L. AH 1379 (1961) - (1968), serial number 144 342300,al-Masjid al-Haram (Holy mosque) Mecca & al-Masjid al-Haram (Holy mosque), Mecca, about UNC - UNC and 100 Riyals silver device at centre on front Pick 25a signatures - with abbreviation for "acting" right below left signature, L. AH 1379 (1961) - (1984), series 125/273539, Prophet's mosque (Medina), King Abdul-Aziz Ibn Abd Fahd & Prophet's mosque (Medina), about EF

Estimate: 50-100 GBP