Watch List notes:

Oman, Sultanate, Qabus bin Sa'id (1970- ), proof 6-Coin currency set, AH1411 / 1990, celebrating the 20th National Day, 2-Omani Rials, 100-Baisa, 50-Baisa, 25-Baisa, 10-Baisa, 5-Baisa, in original green presentation box (KM PS 5, containing KM 76-81), proof uncirculated (6).
Low mintage of only 2000 sets.
Estimate: £150 - £200